diff --git a/3d-viewer/3d_struct.h b/3d-viewer/3d_struct.h
index cab00a947a..b27178e339 100644
--- a/3d-viewer/3d_struct.h
+++ b/3d-viewer/3d_struct.h
@@ -80,6 +80,10 @@ public:
     S3D_MATERIAL* Back() const { return (S3D_MATERIAL*) Pback; }
 
     void SetMaterial();
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 
@@ -131,6 +135,10 @@ public:
     int  ReadAppearance( FILE* file, int* LineNum );
     int  ReadGeometry( FILE* file, int* LineNum );
     void Set_Object_Coords( std::vector< S3D_Vertex >& aVertices );
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 
@@ -150,6 +158,10 @@ public:
     Struct3D_Shape* Back() const { return (Struct3D_Shape*) Pback; }
 
     int ReadData( FILE* file, int* LineNum );
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 
@@ -185,5 +197,4 @@ public:
     void       SetToolTip( const wxString& text );
 };
 
-
-#endif /* STRUCT_3D_H */
+#endif // STRUCT_3D_H
diff --git a/common/base_screen.cpp b/common/base_screen.cpp
index 295f5ef3c9..2d0b8c5c60 100644
--- a/common/base_screen.cpp
+++ b/common/base_screen.cpp
@@ -516,7 +516,7 @@ void BASE_SCREEN::InsertItem( EDA_ITEMS::iterator aIter, EDA_ITEM* aItem )
 
 #if defined(DEBUG)
 
-void BASE_SCREEN::Show( int nestLevel, std::ostream& os )
+void BASE_SCREEN::Show( int nestLevel, std::ostream& os ) const
 {
     EDA_ITEM* item = m_drawList;
 
diff --git a/common/base_struct.cpp b/common/base_struct.cpp
index 5064b742bf..c02cbef1b4 100644
--- a/common/base_struct.cpp
+++ b/common/base_struct.cpp
@@ -215,7 +215,6 @@ bool EDA_ITEM::operator<( const EDA_ITEM& aItem ) const
 
 #if defined(DEBUG)
 
-
 // A function that should have been in wxWidgets
 std::ostream& operator<<( std::ostream& out, const wxSize& size )
 {
@@ -232,14 +231,14 @@ std::ostream& operator<<( std::ostream& out, const wxPoint& pt )
 }
 
 
-void EDA_ITEM::Show( int nestLevel, std::ostream& os ) const
+void EDA_ITEM::ShowDummy( std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
 
-    NestedSpace( nestLevel, os ) << '<' << s.Lower().mb_str() << ">"
-                                 << " Need ::Show() override for this class "
-                                 << "</" << s.Lower().mb_str() << ">\n";
+    os << '<' << s.Lower().mb_str() << ">"
+       << " Need ::Show() override for this class "
+       << "</" << s.Lower().mb_str() << ">\n";
 }
 
 
@@ -253,7 +252,6 @@ std::ostream& EDA_ITEM::NestedSpace( int nestLevel, std::ostream& os )
     return os;
 }
 
-
 #endif
 
 
diff --git a/eeschema/class_libentry.h b/eeschema/class_libentry.h
index 71ae5d17ef..a66a0d0bbb 100644
--- a/eeschema/class_libentry.h
+++ b/eeschema/class_libentry.h
@@ -167,6 +167,10 @@ public:
     }
 
     bool operator==( const LIB_ALIAS* aAlias ) const { return this == aAlias; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 extern bool operator<( const LIB_ALIAS& aItem1, const LIB_ALIAS& aItem2 );
@@ -672,7 +676,10 @@ public:
     bool ShowPinNumbers() { return m_showPinNumbers; }
 
     bool operator==( const LIB_COMPONENT* aComponent ) const { return this == aComponent; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
-
 #endif  //  CLASS_LIBENTRY_H
diff --git a/eeschema/class_netlist_object.cpp b/eeschema/class_netlist_object.cpp
index 389c83a1db..b45889af9b 100644
--- a/eeschema/class_netlist_object.cpp
+++ b/eeschema/class_netlist_object.cpp
@@ -94,7 +94,7 @@ const char* ShowType( NETLIST_ITEM_T aType )
 }
 
 
-void NETLIST_OBJECT::Show( std::ostream& out, int ndx )
+void NETLIST_OBJECT::Show( std::ostream& out, int ndx ) const
 {
     wxString path = m_SheetList.PathHumanReadable();
 
@@ -114,8 +114,10 @@ void NETLIST_OBJECT::Show( std::ostream& out, int ndx )
     switch( m_Type )
     {
     case NET_PIN:
+        /* GetRef() needs to be const
         out << " <refOfComp>" << ((SCH_COMPONENT*)m_Link)->GetRef(&m_SheetList).mb_str()
             << "</refOfComp>\n";
+        */
 
         if( m_Comp )
             m_Comp->Show( 1, out );
diff --git a/eeschema/class_netlist_object.h b/eeschema/class_netlist_object.h
index 47ee1d9891..9550067e28 100644
--- a/eeschema/class_netlist_object.h
+++ b/eeschema/class_netlist_object.h
@@ -142,7 +142,7 @@ public:
                                          */
 
 #if defined(DEBUG)
-    void Show( std::ostream& out, int ndx );
+    void Show( std::ostream& out, int ndx ) const;      // override
 #endif
 
     NETLIST_OBJECT();
diff --git a/eeschema/lib_draw_item.h b/eeschema/lib_draw_item.h
index a3fbcd96fe..7e6dbd0de3 100644
--- a/eeschema/lib_draw_item.h
+++ b/eeschema/lib_draw_item.h
@@ -416,6 +416,10 @@ public:
 
     FILL_T GetFillMode() const { return m_Fill; }
 
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 protected:
 
     /**
diff --git a/eeschema/lib_pin.cpp b/eeschema/lib_pin.cpp
index 5e7b2c9e7a..6396785708 100644
--- a/eeschema/lib_pin.cpp
+++ b/eeschema/lib_pin.cpp
@@ -2163,7 +2163,7 @@ bool LIB_PIN::Matches( wxFindReplaceData& aSearchData, void* aAuxData, wxPoint*
 
 #if defined(DEBUG)
 
-void LIB_PIN::Show( int nestLevel, std::ostream& os )
+void LIB_PIN::Show( int nestLevel, std::ostream& os ) const
 {
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str()
                                  << " num=\"" << GetNumberString().mb_str()
diff --git a/eeschema/lib_pin.h b/eeschema/lib_pin.h
index a9e9ece060..d99fbd93ad 100644
--- a/eeschema/lib_pin.h
+++ b/eeschema/lib_pin.h
@@ -134,7 +134,7 @@ public:
     }
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );   // virtual override
+    void Show( int nestLevel, std::ostream& os ) const;   // virtual override
 #endif
 
     /**
diff --git a/eeschema/lib_text.cpp b/eeschema/lib_text.cpp
index 26aaac1ab2..838fad628a 100644
--- a/eeschema/lib_text.cpp
+++ b/eeschema/lib_text.cpp
@@ -123,7 +123,7 @@ bool LIB_TEXT::Load( LINE_READER& aLineReader, wxString& errorMsg )
     }
     else
     {
-        cnt = sscanf( line + 2, "%d %d %d %d %d %d %d %s %s %d %c %c",
+        cnt = sscanf( line + 2, "%lf %d %d %d %d %d %d %s %s %d %c %c",
                       &angle, &m_Pos.x, &m_Pos.y, &m_Size.x, &m_Attributs,
                       &m_Unit, &m_Convert, buf, tmp, &thickness, &hjustify,
                       &vjustify );
diff --git a/eeschema/sch_bitmap.cpp b/eeschema/sch_bitmap.cpp
index 573a829076..a3ef919b93 100644
--- a/eeschema/sch_bitmap.cpp
+++ b/eeschema/sch_bitmap.cpp
@@ -251,7 +251,7 @@ bool SCH_BITMAP::IsSelectStateChanged( const wxRect& aRect )
 
 
 #if defined(DEBUG)
-void SCH_BITMAP::Show( int nestLevel, std::ostream& os )
+void SCH_BITMAP::Show( int nestLevel, std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
diff --git a/eeschema/sch_bitmap.h b/eeschema/sch_bitmap.h
index 85399938ad..f6223a79e8 100644
--- a/eeschema/sch_bitmap.h
+++ b/eeschema/sch_bitmap.h
@@ -161,7 +161,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return image_xpm; }
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
 private:
diff --git a/eeschema/sch_bus_entry.h b/eeschema/sch_bus_entry.h
index fafb03eff3..b2faf2242a 100644
--- a/eeschema/sch_bus_entry.h
+++ b/eeschema/sch_bus_entry.h
@@ -148,6 +148,10 @@ public:
 
     virtual BITMAP_DEF GetMenuImage() const { return  add_entry_xpm; }
 
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 private:
     virtual bool doHitTest( const wxPoint& aPoint, int aAccuracy ) const;
     virtual bool doHitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const;
diff --git a/eeschema/sch_component.cpp b/eeschema/sch_component.cpp
index a3bcb2fd08..7a4c82b3e8 100644
--- a/eeschema/sch_component.cpp
+++ b/eeschema/sch_component.cpp
@@ -380,7 +380,7 @@ void SCH_COMPONENT::AddHierarchicalReference( const wxString& aPath,
 }
 
 
-wxString SCH_COMPONENT::GetPath( SCH_SHEET_PATH* sheet )
+wxString SCH_COMPONENT::GetPath( const SCH_SHEET_PATH* sheet ) const
 {
     wxCHECK_MSG( sheet != NULL, wxEmptyString,
                  wxT( "Cannot get component path with invalid sheet object." ) );
@@ -392,7 +392,7 @@ wxString SCH_COMPONENT::GetPath( SCH_SHEET_PATH* sheet )
 }
 
 
-const wxString SCH_COMPONENT::GetRef( SCH_SHEET_PATH* sheet )
+const wxString SCH_COMPONENT::GetRef( const SCH_SHEET_PATH* sheet )
 {
     wxString          path = GetPath( sheet );
     wxString          h_path, h_ref;
@@ -435,7 +435,7 @@ const wxString SCH_COMPONENT::GetRef( SCH_SHEET_PATH* sheet )
  * i.e starts by letter
  * returns true if OK
  */
-bool SCH_COMPONENT::IsReferenceStringValid( const wxString & aReferenceString )
+bool SCH_COMPONENT::IsReferenceStringValid( const wxString& aReferenceString )
 {
     wxString text = aReferenceString;
     bool ok = true;
@@ -454,7 +454,7 @@ bool SCH_COMPONENT::IsReferenceStringValid( const wxString & aReferenceString )
 }
 
 
-void SCH_COMPONENT::SetRef( SCH_SHEET_PATH* sheet, const wxString& ref )
+void SCH_COMPONENT::SetRef( const SCH_SHEET_PATH* sheet, const wxString& ref )
 {
     wxString          path = GetPath( sheet );
 
@@ -929,7 +929,7 @@ wxPoint SCH_COMPONENT::GetScreenCoord( const wxPoint& aPoint )
 
 #if defined(DEBUG)
 
-void SCH_COMPONENT::Show( int nestLevel, std::ostream& os )
+void SCH_COMPONENT::Show( int nestLevel, std::ostream& os ) const
 {
     // for now, make it look like XML:
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str()
diff --git a/eeschema/sch_component.h b/eeschema/sch_component.h
index c3ea06a82d..e9abf6226d 100644
--- a/eeschema/sch_component.h
+++ b/eeschema/sch_component.h
@@ -287,7 +287,7 @@ public:
     virtual void SwapData( SCH_ITEM* aItem );
 
     // returns a unique ID, in the form of a path.
-    wxString GetPath( SCH_SHEET_PATH* sheet );
+    wxString GetPath( const SCH_SHEET_PATH* sheet ) const;
 
     /**
      * Function IsReferenceStringValid (static)
@@ -297,18 +297,18 @@ public:
      * @param aReferenceString = the reference string to validate
      * @return true if OK
      */
-    static bool IsReferenceStringValid( const wxString &aReferenceString );
+    static bool IsReferenceStringValid( const wxString& aReferenceString );
 
     /**
      * Function GetRef
      * returns the reference, for the given sheet path.
      */
-    const wxString GetRef( SCH_SHEET_PATH* sheet );
+    const wxString GetRef( const SCH_SHEET_PATH* sheet );
 
     /**
      * Set the reference, for the given sheet path.
      */
-    void SetRef( SCH_SHEET_PATH* sheet, const wxString& ref );
+    void SetRef( const SCH_SHEET_PATH* sheet, const wxString& ref );
 
     /**
      * Function AddHierarchicalReference
@@ -407,16 +407,7 @@ public:
     virtual bool IsReplaceable() const { return true; }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *          of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
 private:
diff --git a/eeschema/sch_field.h b/eeschema/sch_field.h
index 1e4beed139..992900b677 100644
--- a/eeschema/sch_field.h
+++ b/eeschema/sch_field.h
@@ -219,6 +219,10 @@ public:
      */
     virtual bool IsReplaceable() const { return true; }
 
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 private:
     virtual bool doHitTest( const wxPoint& aPoint, int aAccuracy ) const;
     virtual bool doHitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const;
diff --git a/eeschema/sch_junction.cpp b/eeschema/sch_junction.cpp
index 6006ea0dd1..e39c97bc63 100644
--- a/eeschema/sch_junction.cpp
+++ b/eeschema/sch_junction.cpp
@@ -203,7 +203,7 @@ void SCH_JUNCTION::GetNetListItem( vector<NETLIST_OBJECT*>& aNetListItems,
 
 
 #if defined(DEBUG)
-void SCH_JUNCTION::Show( int nestLevel, std::ostream& os )
+void SCH_JUNCTION::Show( int nestLevel, std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
diff --git a/eeschema/sch_junction.h b/eeschema/sch_junction.h
index 7557f01fe3..f9ecc6f2fe 100644
--- a/eeschema/sch_junction.h
+++ b/eeschema/sch_junction.h
@@ -122,7 +122,7 @@ public:
                                  SCH_SHEET_PATH*          aSheetPath );
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
 private:
diff --git a/eeschema/sch_line.h b/eeschema/sch_line.h
index 7a2d511e1d..bb1a748173 100644
--- a/eeschema/sch_line.h
+++ b/eeschema/sch_line.h
@@ -173,7 +173,7 @@ public:
     virtual bool operator <( const SCH_ITEM& aItem ) const;
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os ) const;
+    void Show( int nestLevel, std::ostream& os ) const; // override
 #endif
 
 private:
diff --git a/eeschema/sch_marker.cpp b/eeschema/sch_marker.cpp
index 8f5683dd0e..64dd15a1ad 100644
--- a/eeschema/sch_marker.cpp
+++ b/eeschema/sch_marker.cpp
@@ -63,14 +63,7 @@ EDA_ITEM* SCH_MARKER::doClone() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void SCH_MARKER::Show( int nestLevel, std::ostream& os )
+void SCH_MARKER::Show( int nestLevel, std::ostream& os ) const
 {
     // for now, make it look like XML:
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str()
diff --git a/eeschema/sch_marker.h b/eeschema/sch_marker.h
index 055d7df26d..82dae0c9c7 100644
--- a/eeschema/sch_marker.h
+++ b/eeschema/sch_marker.h
@@ -28,8 +28,8 @@
  * @brief SCH_MARKER class definition.
  */
 
-#ifndef _TYPE_SCH_MARKER_H_
-#define _TYPE_SCH_MARKER_H_
+#ifndef TYPE_SCH_MARKER_H_
+#define TYPE_SCH_MARKER_H_
 
 #include "sch_item_struct.h"
 #include "class_marker_base.h"
@@ -128,8 +128,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  erc_xpm; }
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
     virtual bool doHitTest( const wxPoint& aPoint, int aAccuracy ) const;
@@ -138,4 +137,4 @@ public:
     virtual void doSetPosition( const wxPoint& aPosition ) { m_Pos = aPosition; }
 };
 
-#endif /* _TYPE_SCH_MARKER_H_ */
+#endif // TYPE_SCH_MARKER_H_
diff --git a/eeschema/sch_no_connect.h b/eeschema/sch_no_connect.h
index 20ce9abf80..ef32dc5eeb 100644
--- a/eeschema/sch_no_connect.h
+++ b/eeschema/sch_no_connect.h
@@ -126,6 +126,10 @@ public:
     virtual void GetNetListItem( vector<NETLIST_OBJECT*>& aNetListItems,
                                  SCH_SHEET_PATH*          aSheetPath );
 
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 private:
     virtual bool doIsConnected( const wxPoint& aPosition ) const;
     virtual bool doHitTest( const wxPoint& aPoint, int aAccuracy ) const;
diff --git a/eeschema/sch_polyline.h b/eeschema/sch_polyline.h
index 162c489000..082c88678b 100644
--- a/eeschema/sch_polyline.h
+++ b/eeschema/sch_polyline.h
@@ -154,6 +154,10 @@ public:
         return m_points[ aIndex ];
     }
 
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 private:
     virtual bool doHitTest( const wxPoint& aPoint, int aAccuracy ) const;
     virtual bool doHitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const;
diff --git a/eeschema/sch_sheet.cpp b/eeschema/sch_sheet.cpp
index 23f672185d..bba80bbf37 100644
--- a/eeschema/sch_sheet.cpp
+++ b/eeschema/sch_sheet.cpp
@@ -1207,7 +1207,7 @@ void SCH_SHEET::doPlot( PLOTTER* aPlotter )
 
 #if defined(DEBUG)
 
-void SCH_SHEET::Show( int nestLevel, std::ostream& os )
+void SCH_SHEET::Show( int nestLevel, std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
@@ -1216,7 +1216,7 @@ void SCH_SHEET::Show( int nestLevel, std::ostream& os )
                                  << TO_UTF8( m_name ) << '"' << ">\n";
 
     // show all the pins, and check the linked list integrity
-    BOOST_FOREACH( SCH_SHEET_PIN& label, m_pins )
+    BOOST_FOREACH( const SCH_SHEET_PIN& label, m_pins )
     {
         label.Show( nestLevel + 1, os );
     }
diff --git a/eeschema/sch_sheet.h b/eeschema/sch_sheet.h
index 204b0bfb2b..b9955d6caa 100644
--- a/eeschema/sch_sheet.h
+++ b/eeschema/sch_sheet.h
@@ -170,10 +170,7 @@ public:
     virtual bool Load( LINE_READER& aLine, wxString& aErrorMsg );
 
 #if defined(DEBUG)
-
-    // comment inherited by Doxygen from Base_Struct
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
     /**
@@ -633,10 +630,7 @@ public:
                                  SCH_SHEET_PATH*          aSheetPath );
 
 #if defined(DEBUG)
-
-    // comment inherited by Doxygen from Base_Struct
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
 protected:
diff --git a/eeschema/sch_sheet_pin.cpp b/eeschema/sch_sheet_pin.cpp
index 1dfde15e0f..dd13af2fd1 100644
--- a/eeschema/sch_sheet_pin.cpp
+++ b/eeschema/sch_sheet_pin.cpp
@@ -531,7 +531,7 @@ bool SCH_SHEET_PIN::doHitTest( const wxPoint& aPoint, int aAccuracy ) const
 
 #if defined(DEBUG)
 
-void SCH_SHEET_PIN::Show( int nestLevel, std::ostream& os )
+void SCH_SHEET_PIN::Show( int nestLevel, std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
diff --git a/eeschema/sch_text.cpp b/eeschema/sch_text.cpp
index a2e4fcc124..1e45f9a6b3 100644
--- a/eeschema/sch_text.cpp
+++ b/eeschema/sch_text.cpp
@@ -732,7 +732,7 @@ void SCH_TEXT::doPlot( PLOTTER* aPlotter )
 
 #if defined(DEBUG)
 
-void SCH_TEXT::Show( int nestLevel, std::ostream& os )
+void SCH_TEXT::Show( int nestLevel, std::ostream& os ) const
 {
     // XML output:
     wxString s = GetClass();
diff --git a/eeschema/sch_text.h b/eeschema/sch_text.h
index 7ed820a04f..f1cbe31d80 100644
--- a/eeschema/sch_text.h
+++ b/eeschema/sch_text.h
@@ -239,7 +239,7 @@ public:
                                  SCH_SHEET_PATH*          aSheetPath );
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );
+    void Show( int nestLevel, std::ostream& os ) const;     // override
 #endif
 
 private:
diff --git a/gerbview/class_gerber_draw_item.cpp b/gerbview/class_gerber_draw_item.cpp
index b7bda2184c..5cc92c8793 100644
--- a/gerbview/class_gerber_draw_item.cpp
+++ b/gerbview/class_gerber_draw_item.cpp
@@ -633,7 +633,7 @@ bool GERBER_DRAW_ITEM::HitTest( EDA_RECT& aRefArea )
 
 #if defined(DEBUG)
 
-void GERBER_DRAW_ITEM::Show( int nestLevel, std::ostream& os )
+void GERBER_DRAW_ITEM::Show( int nestLevel, std::ostream& os ) const
 {
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() <<
 
diff --git a/gerbview/class_gerber_draw_item.h b/gerbview/class_gerber_draw_item.h
index 42beff5ae6..3f32925cfe 100644
--- a/gerbview/class_gerber_draw_item.h
+++ b/gerbview/class_gerber_draw_item.h
@@ -270,7 +270,6 @@ public:
         return wxT( "GERBER_DRAW_ITEM" );
     }
 
-
     /**
      * Function Save.
      * currently: no nothing, but must be defined to meet requirements
@@ -279,17 +278,9 @@ public:
     bool Save( FILE* aFile ) const;
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;  // override
 #endif
+
 };
 
 #endif /* CLASS_GERBER_DRAW_ITEM_H */
diff --git a/include/base_struct.h b/include/base_struct.h
index 4092c766ee..a4c392296a 100644
--- a/include/base_struct.h
+++ b/include/base_struct.h
@@ -705,8 +705,10 @@ public:
      *                  of nesting of this object within the overall tree.
      * @param os The ostream& to output to.
      */
-    virtual void Show( int nestLevel, std::ostream& os ) const;
+    virtual void Show( int nestLevel, std::ostream& os ) const = 0;
+    // pure virtual so compiler warns if somebody mucks up a derived declaration
 
+    void ShowDummy( std::ostream& os ) const;  ///< call this if you are a lazy developer
 
     /**
      * Function NestedSpace
diff --git a/include/block_commande.h b/include/block_commande.h
index b4f2e699a6..6e3efd0489 100644
--- a/include/block_commande.h
+++ b/include/block_commande.h
@@ -143,6 +143,10 @@ public:
      * and clears the selected item list.
      */
     void Clear();
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const {}   // override
+#endif
 };
 
 
diff --git a/include/class_base_screen.h b/include/class_base_screen.h
index 772d037e46..04c004fa37 100644
--- a/include/class_base_screen.h
+++ b/include/class_base_screen.h
@@ -28,8 +28,8 @@
  * @brief BASE_SCREEN class implementation.
  */
 
-#ifndef  __CLASS_BASE_SCREEN_H__
-#define  __CLASS_BASE_SCREEN_H__
+#ifndef  CLASS_BASE_SCREEN_H_
+#define  CLASS_BASE_SCREEN_H_
 
 #include "base_struct.h"
 #include "class_undoredo_container.h"
@@ -469,18 +469,9 @@ public:
     }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *          of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
 
-#endif  /* #ifndef __CLASS_BASE_SCREEN_H__ */
+#endif  // CLASS_BASE_SCREEN_H_
diff --git a/pcbnew/class_board.cpp b/pcbnew/class_board.cpp
index 0775a2c134..7340ddca7f 100644
--- a/pcbnew/class_board.cpp
+++ b/pcbnew/class_board.cpp
@@ -2150,57 +2150,46 @@ TRACK* BOARD::CreateLockPoint( wxPoint& aPosition, TRACK* aSegment, PICKED_ITEMS
 
 #if defined(DEBUG)
 
-void BOARD::Show( int nestLevel, std::ostream& os )
+void BOARD::Show( int nestLevel, std::ostream& os ) const
 {
     BOARD_ITEM* p;
 
     // for now, make it look like XML:
-    NestedSpace( nestLevel,
-                 os ) << '<' << GetClass().Lower().mb_str() << ">\n";
+    NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() << ">\n";
 
     // specialization of the output:
     NestedSpace( nestLevel + 1, os ) << "<modules>\n";
     p = m_Modules;
-
     for( ; p; p = p->Next() )
         p->Show( nestLevel + 2, os );
-
     NestedSpace( nestLevel + 1, os ) << "</modules>\n";
 
     NestedSpace( nestLevel + 1, os ) << "<pdrawings>\n";
     p = m_Drawings;
-
     for( ; p; p = p->Next() )
         p->Show( nestLevel + 2, os );
-
     NestedSpace( nestLevel + 1, os ) << "</pdrawings>\n";
 
     NestedSpace( nestLevel + 1, os ) << "<tracks>\n";
     p = m_Track;
-
     for( ; p; p = p->Next() )
         p->Show( nestLevel + 2, os );
-
     NestedSpace( nestLevel + 1, os ) << "</tracks>\n";
 
     NestedSpace( nestLevel + 1, os ) << "<zones>\n";
     p = m_Zone;
-
     for( ; p; p = p->Next() )
         p->Show( nestLevel + 2, os );
-
     NestedSpace( nestLevel + 1, os ) << "</zones>\n";
 
-    /*
-     *  NestedSpace( nestLevel+1, os ) << "<zone_container>\n";
-     *  for( ZONE_CONTAINERS::iterator i=m_ZoneDescriptorList.begin();
-     *  i!=m_ZoneDescriptorList.end();  ++i )
-     *   (*i)->Show( nestLevel+2, os );
-     *  NestedSpace( nestLevel+1, os ) << "</zone_container>\n";
-     */
+    NestedSpace( nestLevel+1, os ) << "<zone_containers>\n";
+    for( ZONE_CONTAINERS::const_iterator it = m_ZoneDescriptorList.begin();
+                it != m_ZoneDescriptorList.end();  ++it )
+        (*it)->Show( nestLevel+2, os );
+
+    NestedSpace( nestLevel+1, os ) << "</zone_containers>\n";
 
     p = (BOARD_ITEM*) m_Son;
-
     for( ; p; p = p->Next() )
     {
         p->Show( nestLevel + 1, os );
diff --git a/pcbnew/class_board.h b/pcbnew/class_board.h
index 50a0922f52..6f110e9f6e 100644
--- a/pcbnew/class_board.h
+++ b/pcbnew/class_board.h
@@ -881,16 +881,7 @@ public:
     }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 
 
diff --git a/pcbnew/class_dimension.h b/pcbnew/class_dimension.h
index 608c372709..cb1a717e41 100644
--- a/pcbnew/class_dimension.h
+++ b/pcbnew/class_dimension.h
@@ -155,6 +155,11 @@ public:
     virtual wxString GetSelectMenuText() const;
 
     virtual BITMAP_DEF GetMenuImage() const { return  add_dimension_xpm; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
+
 };
 
 #endif  // DIMENSION_H_
diff --git a/pcbnew/class_drawsegment.cpp b/pcbnew/class_drawsegment.cpp
index f4128e223f..316cbb7e95 100644
--- a/pcbnew/class_drawsegment.cpp
+++ b/pcbnew/class_drawsegment.cpp
@@ -501,14 +501,7 @@ wxString DRAWSEGMENT::GetSelectMenuText() const
 
 
 #if defined(DEBUG)
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void DRAWSEGMENT::Show( int nestLevel, std::ostream& os )
+void DRAWSEGMENT::Show( int nestLevel, std::ostream& os ) const
 {
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() <<
 
diff --git a/pcbnew/class_drawsegment.h b/pcbnew/class_drawsegment.h
index 24f4db2ebb..5dc55ed5c2 100644
--- a/pcbnew/class_drawsegment.h
+++ b/pcbnew/class_drawsegment.h
@@ -245,7 +245,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  add_dashed_line_xpm; }
 
 #if defined(DEBUG)
-    void Show( int nestLevel, std::ostream& os );
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_edge_mod.cpp b/pcbnew/class_edge_mod.cpp
index 5deb6e6890..b930dc0bcc 100644
--- a/pcbnew/class_edge_mod.cpp
+++ b/pcbnew/class_edge_mod.cpp
@@ -248,14 +248,7 @@ wxString EDGE_MODULE::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void EDGE_MODULE::Show( int nestLevel, std::ostream& os )
+void EDGE_MODULE::Show( int nestLevel, std::ostream& os ) const
 {
     wxString shape = ShowShape( (STROKE_T) m_Shape );
 
diff --git a/pcbnew/class_edge_mod.h b/pcbnew/class_edge_mod.h
index ed84a1d29b..3e580e6478 100644
--- a/pcbnew/class_edge_mod.h
+++ b/pcbnew/class_edge_mod.h
@@ -81,16 +81,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  show_mod_edge_xpm; }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_marker_pcb.h b/pcbnew/class_marker_pcb.h
index 40254cfb21..2dc9584051 100644
--- a/pcbnew/class_marker_pcb.h
+++ b/pcbnew/class_marker_pcb.h
@@ -118,7 +118,10 @@ public:
     virtual wxString GetSelectMenuText() const;
 
     virtual BITMAP_DEF GetMenuImage() const { return  drc_xpm; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
-
 #endif      //  CLASS_MARKER_PCB_H
diff --git a/pcbnew/class_mire.h b/pcbnew/class_mire.h
index 6fcc5e41c5..13bbd94c05 100644
--- a/pcbnew/class_mire.h
+++ b/pcbnew/class_mire.h
@@ -112,6 +112,10 @@ public:
     virtual wxString GetSelectMenuText() const;
 
     virtual BITMAP_DEF GetMenuImage() const { return  add_mires_xpm; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 
diff --git a/pcbnew/class_module.cpp b/pcbnew/class_module.cpp
index 84a04f5661..3edb8e708a 100644
--- a/pcbnew/class_module.cpp
+++ b/pcbnew/class_module.cpp
@@ -565,14 +565,7 @@ wxString MODULE::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void MODULE::Show( int nestLevel, std::ostream& os )
+void MODULE::Show( int nestLevel, std::ostream& os ) const
 {
     BOARD* board = GetBoard();
 
diff --git a/pcbnew/class_module.h b/pcbnew/class_module.h
index da5204895b..aeecd6bac8 100644
--- a/pcbnew/class_module.h
+++ b/pcbnew/class_module.h
@@ -375,16 +375,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  module_xpm; }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_netclass.cpp b/pcbnew/class_netclass.cpp
index e41cc31855..213137d188 100644
--- a/pcbnew/class_netclass.cpp
+++ b/pcbnew/class_netclass.cpp
@@ -263,7 +263,7 @@ void BOARD::SynchronizeNetsAndNetClasses()
 
 #if defined(DEBUG)
 
-void NETCLASS::Show( int nestLevel, std::ostream& os )
+void NETCLASS::Show( int nestLevel, std::ostream& os ) const
 {
     // for now, make it look like XML:
     //NestedSpace( nestLevel, os )
diff --git a/pcbnew/class_netclass.h b/pcbnew/class_netclass.h
index 6a45c5a27d..e6c224d0f8 100644
--- a/pcbnew/class_netclass.h
+++ b/pcbnew/class_netclass.h
@@ -213,16 +213,7 @@ public:
     bool ReadDescr( LINE_READER* aReader );
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_pad.cpp b/pcbnew/class_pad.cpp
index ccf302a071..be61d5d6e1 100644
--- a/pcbnew/class_pad.cpp
+++ b/pcbnew/class_pad.cpp
@@ -721,14 +721,7 @@ wxString D_PAD::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void D_PAD::Show( int nestLevel, std::ostream& os )
+void D_PAD::Show( int nestLevel, std::ostream& os ) const
 {
     char padname[5] = { m_Padname[0], m_Padname[1], m_Padname[2], m_Padname[3], 0 };
 
diff --git a/pcbnew/class_pad.h b/pcbnew/class_pad.h
index 6df7e577a8..2229510fb5 100644
--- a/pcbnew/class_pad.h
+++ b/pcbnew/class_pad.h
@@ -447,16 +447,7 @@ public:
     wxString ShowPadAttr() const;
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_pcb_text.cpp b/pcbnew/class_pcb_text.cpp
index 8e250b521a..71b5ea812c 100644
--- a/pcbnew/class_pcb_text.cpp
+++ b/pcbnew/class_pcb_text.cpp
@@ -161,14 +161,7 @@ wxString TEXTE_PCB::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void TEXTE_PCB::Show( int nestLevel, std::ostream& os )
+void TEXTE_PCB::Show( int nestLevel, std::ostream& os ) const
 {
     // for now, make it look like XML:
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() <<
diff --git a/pcbnew/class_pcb_text.h b/pcbnew/class_pcb_text.h
index 7f96b1f79f..329978609e 100644
--- a/pcbnew/class_pcb_text.h
+++ b/pcbnew/class_pcb_text.h
@@ -138,14 +138,7 @@ public:
     virtual EDA_RECT GetBoundingBox() const { return GetTextBox(); };
 
 #if defined(DEBUG)
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
+    void Show( int nestLevel, std::ostream& os ) const;
 #endif
 };
 
diff --git a/pcbnew/class_text_mod.cpp b/pcbnew/class_text_mod.cpp
index 89e2df97ed..07a4abdf04 100644
--- a/pcbnew/class_text_mod.cpp
+++ b/pcbnew/class_text_mod.cpp
@@ -454,14 +454,7 @@ wxString TEXTE_MODULE::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-/**
- * Function Show
- * is used to output the object tree, currently for debugging only.
- * @param nestLevel An aid to prettier tree indenting, and is the level
- *          of nesting of this object within the overall tree.
- * @param os The ostream& to output to.
- */
-void TEXTE_MODULE::Show( int nestLevel, std::ostream& os )
+void TEXTE_MODULE::Show( int nestLevel, std::ostream& os ) const
 {
     // for now, make it look like XML:
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() <<
@@ -471,5 +464,4 @@ void TEXTE_MODULE::Show( int nestLevel, std::ostream& os )
 //                                 << ">\n";
 }
 
-
 #endif
diff --git a/pcbnew/class_text_mod.h b/pcbnew/class_text_mod.h
index d86e810ae6..3d2039c258 100644
--- a/pcbnew/class_text_mod.h
+++ b/pcbnew/class_text_mod.h
@@ -4,8 +4,8 @@
  */
 
 
-#ifndef TEXT_MODULE_H
-#define TEXT_MODULE_H
+#ifndef TEXT_MODULE_H_
+#define TEXT_MODULE_H_
 
 
 #include "class_board_item.h"
@@ -188,17 +188,8 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  footprint_text_xpm; }
 
 #if defined(DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *                  of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    virtual void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
-#endif // TEXT_MODULE_H
+#endif // TEXT_MODULE_H_
diff --git a/pcbnew/class_track.cpp b/pcbnew/class_track.cpp
index 82489c7184..9991be6405 100644
--- a/pcbnew/class_track.cpp
+++ b/pcbnew/class_track.cpp
@@ -1569,7 +1569,7 @@ wxString TRACK::GetSelectMenuText() const
 
 #if defined(DEBUG)
 
-void TRACK::Show( int nestLevel, std::ostream& os )
+void TRACK::Show( int nestLevel, std::ostream& os ) const
 {
     NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() <<
 
@@ -1589,7 +1589,7 @@ void TRACK::Show( int nestLevel, std::ostream& os )
 }
 
 
-void SEGVIA::Show( int nestLevel, std::ostream& os )
+void SEGVIA::Show( int nestLevel, std::ostream& os ) const
 {
     const char* cp;
 
diff --git a/pcbnew/class_track.h b/pcbnew/class_track.h
index 79bedb55fc..eef20010ac 100644
--- a/pcbnew/class_track.h
+++ b/pcbnew/class_track.h
@@ -386,15 +386,7 @@ public:
 
 #if defined (DEBUG)
 
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *          of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 
     /**
      * Function ShowState
@@ -497,16 +489,7 @@ public:
     virtual BITMAP_DEF GetMenuImage() const { return  via_sketch_xpm; }
 
 #if defined (DEBUG)
-
-    /**
-     * Function Show
-     * is used to output the object tree, currently for debugging only.
-     * @param nestLevel An aid to prettier tree indenting, and is the level
-     *          of nesting of this object within the overall tree.
-     * @param os The ostream& to output to.
-     */
-    void Show( int nestLevel, std::ostream& os );
-
+    void Show( int nestLevel, std::ostream& os ) const;     // overload
 #endif
 };
 
diff --git a/pcbnew/class_zone.h b/pcbnew/class_zone.h
index 1ae4dd1a40..7ab84cd33c 100644
--- a/pcbnew/class_zone.h
+++ b/pcbnew/class_zone.h
@@ -496,6 +496,10 @@ public:
     virtual wxString GetSelectMenuText() const;
 
     virtual BITMAP_DEF GetMenuImage() const { return  add_zone_xpm; }
+
+#if defined(DEBUG)
+    void Show( int nestLevel, std::ostream& os ) const { ShowDummy( os ); } // override
+#endif
 };
 
 
diff --git a/pcbnew/files.cpp b/pcbnew/files.cpp
index c7f8b0b563..4fb5381946 100644
--- a/pcbnew/files.cpp
+++ b/pcbnew/files.cpp
@@ -446,8 +446,21 @@ bool PCB_EDIT_FRAME::SavePcbFile( const wxString& aFileName, bool aCreateBackupF
         }
     }
 
-#if !defined(USE_NEW_PCBNEW_SAVE)
+#if defined(USE_NEW_PCBNEW_SAVE)
 
+    try
+    {
+        IO_MGR::Save( IO_MGR::KICAD, pcbFileName.GetFullPath(), GetBoard(), NULL );
+    }
+    catch( IO_ERROR ioe )
+    {
+        wxString msg = wxString::Format(  _( "Error loading board.\n%s" ),
+                            ioe.errorText.GetData() );
+        wxMessageBox( msg, _( "Save Board File" ), wxICON_ERROR );
+        saveok = false;
+    }
+
+#else
     // Create the file
     FILE* dest;
     dest = wxFopen( pcbFileName.GetFullPath(), wxT( "wt" ) );
@@ -468,22 +481,6 @@ bool PCB_EDIT_FRAME::SavePcbFile( const wxString& aFileName, bool aCreateBackupF
         fclose( dest );
     }
 
-#else
-
-    try
-    {
-        IO_MGR::Save( IO_MGR::KICAD, pcbFileName.GetFullPath(), GetBoard(), NULL );          // overload
-    }
-    catch( IO_ERROR ioe )
-    {
-        wxString msg = wxString::Format(  _( "Error loading board.\n%s" ),
-                            ioe.errorText.GetData() );
-
-        wxMessageBox( msg, _( "Save Board File" ), wxICON_ERROR );
-
-        saveok = false;
-    }
-
 #endif
 
     /* Display the file names: */
diff --git a/pcbnew/kicad_plugin.cpp b/pcbnew/kicad_plugin.cpp
index 2928f0110c..63b17f7c62 100644
--- a/pcbnew/kicad_plugin.cpp
+++ b/pcbnew/kicad_plugin.cpp
@@ -191,6 +191,9 @@ BOARD* KICAD_PLUGIN::Load( const wxString& aFileName, BOARD* aAppendToMe, PROPER
 
     m_reader = &reader;          // member function accessibility
 
+    m_board->m_Status_Pcb = 0;
+    m_board->m_NetClasses.Clear();
+
     init( aProperties );
 
     checkVersion();
@@ -2567,9 +2570,6 @@ void KICAD_PLUGIN::init( PROPERTIES* aProperties )
 #else
     diskToBiu = 1.0;                // BIUs are deci-mils
 #endif
-
-    m_board->m_Status_Pcb = 0;
-    m_board->m_NetClasses.Clear();
 }