diff --git a/3d-viewer/3d_cache/3d_plugin_manager.cpp b/3d-viewer/3d_cache/3d_plugin_manager.cpp
index 2f952af38f..fb3c336f89 100644
--- a/3d-viewer/3d_cache/3d_plugin_manager.cpp
+++ b/3d-viewer/3d_cache/3d_plugin_manager.cpp
@@ -135,7 +135,9 @@ void S3D_PLUGIN_MANAGER::loadPlugins( void )
 #endif
 
     fn.Assign( wxStandardPaths::Get().GetPluginsDir() );
-    fn.AppendDir( wxT( "kicad" ) );
+    #ifndef _WIN32  // suppress 'kicad' subdir since it is redundant on MSWin
+        fn.AppendDir( wxT( "kicad" ) );
+    #endif
     fn.AppendDir( wxT( "plugins" ) );
     fn.AppendDir( wxT( "3d" ) );
     checkPluginPath( std::string( fn.GetPathWithSep().ToUTF8() ), searchpaths );
diff --git a/3d-viewer/3d_cache/sg/CMakeLists.txt b/3d-viewer/3d_cache/sg/CMakeLists.txt
index 45be0fb426..f517600923 100644
--- a/3d-viewer/3d_cache/sg/CMakeLists.txt
+++ b/3d-viewer/3d_cache/sg/CMakeLists.txt
@@ -3,7 +3,7 @@ include_directories(
     ${CMAKE_SOURCE_DIR}/3d-viewer
   )
 
-add_library( s3d_sg SHARED
+add_library( kicad_3dsg SHARED
     sg_base.cpp
     sg_node.cpp
     sg_helpers.cpp
@@ -31,21 +31,60 @@ add_library( s3d_sg SHARED
     ifsg_api.cpp
 )
 
-# Define a flag to expose the appropriate EXPORT macro at build time
-target_compile_definitions( s3d_sg PRIVATE -DCOMPILE_SGLIB )
+find_file( S3DSG_VERSION_FILE sg_version.h
+        PATHS ${CMAKE_CURRENT_SOURCE_DIR} NO_DEFAULT_PATH )
 
-target_link_libraries( s3d_sg ${wxWidgets_LIBRARIES} )
+if( NOT ${S3DSG_VERSION_FILE} STREQUAL "S3DSG_VERSION_FILE-NOTFOUND" )
+
+    # extract the "#define SG_VERSION_*" lines
+    file( STRINGS ${S3DSG_VERSION_FILE} _version
+        REGEX "^[' ','\t']*#define[' ','\t']*SG_VERSION_.*" )
+
+    foreach( SVAR ${_version} )
+        string( REGEX MATCH SG_VERSION_[M,A,J,O,R,I,N,P,T,C,H,E,V]* _VARNAME ${SVAR} )
+        string( REGEX MATCH [0-9]+ _VALUE ${SVAR} )
+
+        if( NOT ${_VARNAME} STREQUAL "" )
+            message( "INFO: " ${_VARNAME} " = " ${_VALUE} )
+            if( NOT ${_VALUE} STREQUAL "" )
+                set( ${_VARNAME} ${_VALUE} )
+            else()
+                set( ${_VARNAME} 0 )
+            endif()
+        endif()
+
+    endforeach()
+
+    if( NOT SG_VERSION_MAJOR AND NOT ${SG_VERSION_MAJOR} STREQUAL "0" )
+        message( FATAL_ERROR "Cannot determine the S3DSG library version" )
+    endif()
+
+    #ensure that NOT SG_VERSION* will evaluate to '0'
+    if( NOT SG_VERSION_MINOR )
+        set( SG_VERSION_MINOR 0 )
+    endif()
+
+    if( NOT SG_VERSION_PATCH )
+        set( SG_VERSION_PATCH 0 )
+    endif()
+
+    set_target_properties( kicad_3dsg
+            PROPERTIES SOVERSION
+            ${SG_VERSION_MAJOR}.${SG_VERSION_MINOR}.${SG_VERSION_PATCH} )
 
-if( APPLE )
-        install( TARGETS
-                s3d_sg
-                DESTINATION /Applications/kicad.app/SharedSupport
-                COMPONENT binary
-        )
 else()
-        install( TARGETS
-                s3d_sg
-                DESTINATION lib/kicad
-                COMPONENT binary
-        )
+    message( FATAL_ERROR "Cannot determine the S3DSG library version" )
 endif()
+
+unset( S3DSG_VERSION_FILE CACHE )
+
+# Define a flag to expose the appropriate EXPORT macro at build time
+target_compile_definitions( kicad_3dsg PRIVATE -DCOMPILE_SGLIB )
+
+target_link_libraries( kicad_3dsg ${wxWidgets_LIBRARIES} )
+
+install( TARGETS
+    kicad_3dsg
+    DESTINATION ${KICAD_LIB}
+    COMPONENT binary
+    )
diff --git a/3d-viewer/3d_cache/sg/ifsg_api.cpp b/3d-viewer/3d_cache/sg/ifsg_api.cpp
index 6c88dea9f7..cec683f900 100644
--- a/3d-viewer/3d_cache/sg/ifsg_api.cpp
+++ b/3d-viewer/3d_cache/sg/ifsg_api.cpp
@@ -39,6 +39,7 @@
 #include "3d_cache/sg/sg_faceset.h"
 #include "3d_cache/sg/sg_normals.h"
 #include "3d_cache/sg/sg_shape.h"
+#include "3d_cache/sg/sg_version.h"
 #include "3d_info.h"
 #include "plugins/3dapi/c3dmodel.h"
 
@@ -411,3 +412,22 @@ void S3D::Init3DMesh( SMESH& aMesh )
 
     return;
 }
+
+
+void S3D::GetLibVersion( unsigned char* Major, unsigned char* Minor,
+    unsigned char* Patch, unsigned char* Revision )
+{
+    if( Major )
+        *Major = SG_VERSION_MAJOR;
+
+    if( Minor )
+        *Minor = SG_VERSION_MINOR;
+
+    if( Revision )
+        *Revision = SG_VERSION_REVNO;
+
+    if( Patch )
+        *Patch = SG_VERSION_PATCH;
+
+    return;
+}
diff --git a/plugins/3d/dummy/s3d_plugin_dummy.h b/3d-viewer/3d_cache/sg/sg_version.h
similarity index 55%
rename from plugins/3d/dummy/s3d_plugin_dummy.h
rename to 3d-viewer/3d_cache/sg/sg_version.h
index 6484eb0506..31b20e4f4f 100644
--- a/plugins/3d/dummy/s3d_plugin_dummy.h
+++ b/3d-viewer/3d_cache/sg/sg_version.h
@@ -22,37 +22,17 @@
  */
 
 /**
- * @file 3d_plugin_dummy.h
- * is a sample dummy plugin which doesn't do much other than serve as
- * an example of how a plugin must be built.
+ * @file sg_version.h
+ * defines the version number of 3DSG library. This file is parsed by
+ * CMake to determine the version number of the 3DSG library.
  */
 
+#ifndef SG_VERSION_H
+#define SG_VERSION_H
 
-#ifndef PLUGIN_3D_DUMMY_H
-#define PLUGIN_3D_DUMMY_H
+#define SG_VERSION_MAJOR 1
+#define SG_VERSION_MINOR 0
+#define SG_VERSION_PATCH 0
+#define SG_VERSION_REVNO 0
 
-#include <vector>
-#include <plugins/3d/3d_plugin.h>
-
-class SCENEGRAPH;
-
-class S3D_PLUGIN_DUMMY : public S3D_PLUGIN
-{
-private:
-    std::vector< wxString > m_extensions;   // supported extensions
-    std::vector< wxString > m_filters;       // file filters
-
-public:
-    S3D_PLUGIN_DUMMY();
-    virtual ~S3D_PLUGIN_DUMMY();
-
-    virtual int GetNExtensions( void ) const;
-    virtual const wxString GetModelExtension( int aIndex ) const;
-    virtual int GetNFilters( void ) const;
-    virtual const wxString GetFileFilter( int aIndex ) const;
-
-    bool CanRender( void ) const;
-    SCENEGRAPH* Load( const wxString& aFileName );
-};
-
-#endif  // PLUGIN_3D_DUMMY_H
+#endif  // SG_VERSION_H
diff --git a/3d-viewer/CMakeLists.txt b/3d-viewer/CMakeLists.txt
index e356900782..326343ed87 100644
--- a/3d-viewer/CMakeLists.txt
+++ b/3d-viewer/CMakeLists.txt
@@ -147,9 +147,9 @@ elseif(NOT GLM_ENABLE_FAST_MATH)
 endif()
 
 if( WIN32 )
-    target_link_libraries( 3d-viewer ${Boost_} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES} s3d_sg )
+    target_link_libraries( 3d-viewer ${Boost_} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES} kicad_3dsg )
 else()
-    target_link_libraries( 3d-viewer ${Boost_} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES} s3d_sg dl )
+    target_link_libraries( 3d-viewer ${Boost_} ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES} kicad_3dsg dl )
 endif()
 
 add_subdirectory( 3d_cache )
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 208e5390c9..ed164bb34b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -341,9 +341,22 @@ if( NOT APPLE )
     if( WIN32 )
         set( KICAD_PLUGINS ${KICAD_BIN}/scripting/plugins
             CACHE PATH "Location of KiCad plugins." )
+
+        set( KICAD_LIB ${KICAD_BIN}
+            CACHE PATH "Location of KiCad shared objects" )
+
+        set( KICAD_USER_PLUGIN ${KICAD_BIN}/plugins
+            CACHE PATH "Location of KiCad user-loaded plugins" )
+
     else()
         set( KICAD_PLUGINS lib/kicad/plugins
             CACHE PATH "Location of KiCad plugins." )
+
+        set( KICAD_LIB ${CMAKE_INSTALL_PREFIX}/lib
+            CACHE PATH "Location of KiCad shared objects" )
+
+        set( KICAD_USER_PLUGIN ${CMAKE_INSTALL_PREFIX}/lib/kicad/plugins
+            CACHE PATH "Location of KiCad user-loaded plugins" )
     endif()
 
     set( KICAD_DATA share/kicad
@@ -360,6 +373,12 @@ else()
     set( KICAD_BIN ${CMAKE_INSTALL_PREFIX}
         CACHE PATH "Location of KiCad binaries." FORCE )
 
+    set( KICAD_LIB /Applications/kicad.app/Contents/Macos
+        CACHE PATH "Location of KiCad shared objects" FORCE )
+
+    set( KICAD_USER_PLUGIN /Applications/kicad.app/SharedSupport/plugins
+        CACHE PATH "Location of KiCad user-loaded plugins" FORCE )
+
     # some paths to single app bundle
     set( OSX_BUNDLE_MAIN "kicad.app" )
     set( OSX_BUNDLE_BIN_DIR "Contents/MacOS" )
@@ -411,6 +430,8 @@ endif()
 
 mark_as_advanced( KICAD_BIN
     KICAD_PLUGINS
+    KICAD_USER_PLUGIN
+    KICAD_LIB
     KICAD_DATA
     KICAD_DOCS
     KICAD_DEMOS
diff --git a/include/plugins/3d/3d_plugin.h b/include/plugins/3d/3d_plugin.h
index 8fffb8f458..60f0f99661 100644
--- a/include/plugins/3d/3d_plugin.h
+++ b/include/plugins/3d/3d_plugin.h
@@ -53,7 +53,7 @@ KICAD_PLUGIN_EXPORT char const* GetKicadPluginClass( void )
 
 
 KICAD_PLUGIN_EXPORT void GetClassVersion( unsigned char* Major,
-    unsigned char* Minor, unsigned char* Revision, unsigned char* Patch )
+    unsigned char* Minor, unsigned char* Patch, unsigned char* Revision )
 {
     if( Major )
         *Major = MAJOR;
@@ -61,17 +61,17 @@ KICAD_PLUGIN_EXPORT void GetClassVersion( unsigned char* Major,
     if( Minor )
         *Minor = MINOR;
 
-    if( Revision )
-        *Revision = REVISION;
-
     if( Patch )
         *Patch = PATCH;
 
+    if( Revision )
+        *Revision = REVISION;
+
     return;
 }
 
 KICAD_PLUGIN_EXPORT bool CheckClassVersion( unsigned char Major,
-                                            unsigned char Minor, unsigned char Revision, unsigned char Patch )
+    unsigned char Minor, unsigned char Patch, unsigned char Revision )
 {
     if( Major != MAJOR )
         return false;
diff --git a/include/plugins/3dapi/ifsg_api.h b/include/plugins/3dapi/ifsg_api.h
index 83fea25950..987b5ee6e8 100644
--- a/include/plugins/3dapi/ifsg_api.h
+++ b/include/plugins/3dapi/ifsg_api.h
@@ -178,6 +178,9 @@ namespace S3D
      * creates and initializes an SMESH struct
      */
     SGLIB_API void Init3DMesh( SMESH& aMesh );
+
+    SGLIB_API void GetLibVersion( unsigned char* Major, unsigned char* Minor,
+        unsigned char* Patch, unsigned char* Revision );
 };
 
 #endif  // IFSG_API_H
diff --git a/include/plugins/3dapi/ifsg_colors.h b/include/plugins/3dapi/ifsg_colors.h
index 9c1632fce8..b8fd5257ed 100644
--- a/include/plugins/3dapi/ifsg_colors.h
+++ b/include/plugins/3dapi/ifsg_colors.h
@@ -30,6 +30,7 @@
 #ifndef IFSG_COLORS_H
 #define IFSG_COLORS_H
 
+#include <cstdlib>
 #include "plugins/3dapi/ifsg_node.h"
 
 
diff --git a/include/plugins/kicad_plugin.h b/include/plugins/kicad_plugin.h
index 43460f01a8..e89f8ffc67 100644
--- a/include/plugins/kicad_plugin.h
+++ b/include/plugins/kicad_plugin.h
@@ -67,7 +67,7 @@ KICAD_PLUGIN_EXPORT char const* GetKicadPluginClass( void );
  * @param Patch will hold the Plugin Class Patch level
  */
 KICAD_PLUGIN_EXPORT void GetClassVersion( unsigned char* Major,
-    unsigned char* Minor, unsigned char* Revision, unsigned char* Patch );
+    unsigned char* Minor, unsigned char* Patch, unsigned char* Revision );
 
 /**
  * Function CheckClassVersion
@@ -80,7 +80,7 @@ KICAD_PLUGIN_EXPORT void GetClassVersion( unsigned char* Major,
  * of the return value of this function.
  */
 KICAD_PLUGIN_EXPORT bool CheckClassVersion( unsigned char Major,
-    unsigned char Minor, unsigned char Revision, unsigned char Patch );
+    unsigned char Minor, unsigned char Patch, unsigned char Revision );
 
 /**
  * Function GetKicadPluginName
@@ -103,10 +103,10 @@ KICAD_PLUGIN_EXPORT const char* GetKicadPluginName( void );
  *
  * @param Major will hold the Plugin Major version
  * @param Minor will hold the Plugin Minor version
- * @param Revision will hold the Plugin Revision
  * @param Patch will hold the Plugin Patch level
+ * @param Revision will hold the Plugin Revision
  */
 KICAD_PLUGIN_EXPORT void GetVersion( unsigned char* Major,
-    unsigned char* Minor, unsigned char* Revision, unsigned char* Patch );
+    unsigned char* Minor, unsigned char* Patch, unsigned char* Revision );
 
 #endif  // KICAD_PLUGIN_H
diff --git a/plugins/3d/CMakeLists.txt b/plugins/3d/CMakeLists.txt
index 7e518dab2c..72fe752465 100644
--- a/plugins/3d/CMakeLists.txt
+++ b/plugins/3d/CMakeLists.txt
@@ -1,3 +1,2 @@
-#add_subdirectory( dummy )
-#add_subdirectory( tetra )
+add_subdirectory( demo )
 add_subdirectory( idf )
diff --git a/plugins/3d/demo/CMakeLists.txt b/plugins/3d/demo/CMakeLists.txt
new file mode 100644
index 0000000000..7e5fa834ca
--- /dev/null
+++ b/plugins/3d/demo/CMakeLists.txt
@@ -0,0 +1,19 @@
+add_library( s3d_plugin_demo1 MODULE
+    s3d_plugin_demo1.cpp
+    )
+
+target_link_libraries( s3d_plugin_demo1 ${wxWidgets_LIBRARIES} )
+
+
+add_library( s3d_plugin_demo2 MODULE
+        s3d_plugin_demo2.cpp
+        )
+
+target_link_libraries( s3d_plugin_demo2 kicad_3dsg ${wxWidgets_LIBRARIES} )
+
+install( TARGETS
+    s3d_plugin_demo1
+    s3d_plugin_demo2
+    DESTINATION ${KICAD_USER_PLUGIN}/3d
+    COMPONENT binary
+    )
diff --git a/plugins/3d/demo/s3d_plugin_demo1.cpp b/plugins/3d/demo/s3d_plugin_demo1.cpp
new file mode 100644
index 0000000000..f3d9275502
--- /dev/null
+++ b/plugins/3d/demo/s3d_plugin_demo1.cpp
@@ -0,0 +1,181 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2015 Cirilo Bernardo <cirilo.bernardo@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+/*
+ * NOTES:
+ *
+ * 1. Notice that the plugin class is instantiated as a static; this
+ * ensures that it created an destroyed.
+ */
+
+#include <iostream>
+#include "plugins/3d/3d_plugin.h"
+
+#define PLUGIN_3D_DEMO1_MAJOR 1
+#define PLUGIN_3D_DEMO1_MINOR 0
+#define PLUGIN_3D_DEMO1_PATCH 0
+#define PLUGIN_3D_DEMO1_REVNO 0
+
+
+const char* GetKicadPluginName( void )
+{
+    return "PLUGIN_3D_DEMO1";
+}
+
+
+void GetVersion( unsigned char* Major, unsigned char* Minor,
+    unsigned char* Patch, unsigned char* Revision )
+{
+    if( Major )
+        *Major = PLUGIN_3D_DEMO1_MAJOR;
+
+    if( Minor )
+        *Minor = PLUGIN_3D_DEMO1_MINOR;
+
+    if( Patch )
+        *Patch = PLUGIN_3D_DEMO1_PATCH;
+
+    if( Revision )
+        *Revision = PLUGIN_3D_DEMO1_REVNO;
+
+    return;
+}
+
+// number of extensions supported
+#ifdef _WIN32
+#define NEXTS 7
+#else
+#define NEXTS 14
+#endif
+
+// number of filter sets supported
+#define NFILS 5
+
+static char ext0[] = "wrl";
+static char ext1[] = "x3d";
+static char ext2[] = "emn";
+static char ext3[] = "iges";
+static char ext4[] = "igs";
+static char ext5[] = "stp";
+static char ext6[] = "step";
+
+#ifdef _WIN32
+static char fil0[] = "VRML 1.0/2.0 (*.wrl)|*.wrl";
+static char fil1[] = "X3D (*.x3d)|*.x3d";
+static char fil2[] = "IDF 2.0/3.0 (*.emn)|*.emn";
+static char fil3[] = "IGESv5.3 (*.igs;*.iges)|*.igs;*.iges";
+static char fil4[] = "STEP (*.stp;*.step)|*.stp;*.step";
+#else
+static char ext7[] = "WRL";
+static char ext8[] = "X3D";
+static char ext9[] = "EMN";
+static char ext10[] = "IGES";
+static char ext11[] = "IGS";
+static char ext12[] = "STP";
+static char ext13[] = "STEP";
+
+static char fil0[] = "VRML 1.0/2.0 (*.wrl;*.WRL)|*.wrl;*.WRL";
+static char fil1[] = "X3D (*.x3d;*.X3D)|*.x3d;*.X3D";
+static char fil2[] = "IDF 2.0/3.0 (*.emn;*.EMN)|*.emn;*.EMN";
+static char fil3[] = "IGESv5.3 (*.igs;*.iges;*.IGS;*.IGES)|*.igs;*.iges;*.IGS;*.IGES";
+static char fil4[] = "STEP (*.stp;*.step;*.STP;*.STEP)|*.stp;*.step;*.STP;*.STEP";
+#endif
+
+
+static struct FILE_DATA
+{
+    char const* extensions[NEXTS];
+    char const* filters[NFILS];
+
+    FILE_DATA()
+    {
+        extensions[0] = ext0;
+        extensions[1] = ext1;
+        extensions[2] = ext2;
+        extensions[3] = ext3;
+        extensions[4] = ext4;
+        extensions[5] = ext5;
+        extensions[6] = ext6;
+        filters[0] = fil0;
+        filters[1] = fil1;
+        filters[2] = fil2;
+        filters[3] = fil3;
+        filters[4] = fil4;
+
+#ifndef _WIN32
+        extensions[7] = ext7;
+        extensions[8] = ext8;
+        extensions[9] = ext9;
+        extensions[10] = ext10;
+        extensions[11] = ext11;
+        extensions[12] = ext12;
+        extensions[13] = ext13;
+#endif
+        return;
+    }
+
+} file_data;
+
+
+int GetNExtensions( void )
+{
+    return NEXTS;
+}
+
+
+char const* GetModelExtension( int aIndex )
+{
+    if( aIndex < 0 || aIndex >= NEXTS )
+        return NULL;
+
+    return file_data.extensions[aIndex];
+}
+
+
+int GetNFilters( void )
+{
+    return NFILS;
+}
+
+
+char const* GetFileFilter( int aIndex )
+{
+    if( aIndex < 0 || aIndex >= NFILS )
+        return NULL;
+
+    return file_data.filters[aIndex];
+}
+
+
+bool CanRender( void )
+{
+    // this dummy plugin does not support rendering of any models
+    return false;
+}
+
+
+SCENEGRAPH* Load( char const* aFileName )
+{
+    // this dummy plugin does not support rendering of any models
+    return NULL;
+}
diff --git a/plugins/3d/tetra/s3d_plugin_tetra.cpp b/plugins/3d/demo/s3d_plugin_demo2.cpp
similarity index 79%
rename from plugins/3d/tetra/s3d_plugin_tetra.cpp
rename to plugins/3d/demo/s3d_plugin_demo2.cpp
index e22cfda48a..665db2bb0e 100644
--- a/plugins/3d/tetra/s3d_plugin_tetra.cpp
+++ b/plugins/3d/demo/s3d_plugin_demo2.cpp
@@ -22,72 +22,119 @@
  */
 
 #include <cmath>
-#include <s3d_plugin_tetra.h>
-#include <plugins/3dapi/ifsg_all.h>
+#include "plugins/3d/3d_plugin.h"
+#include "plugins/3dapi/ifsg_all.h"
 
 
-S3D_PLUGIN_TETRA::S3D_PLUGIN_TETRA()
+#define PLUGIN_3D_DEMO2_MAJOR 1
+#define PLUGIN_3D_DEMO2_MINOR 0
+#define PLUGIN_3D_DEMO2_PATCH 0
+#define PLUGIN_3D_DEMO2_REVNO 0
+
+
+const char* GetKicadPluginName( void )
 {
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "wrl" ) );
+    return "PLUGIN_3D_DEMO2";
+}
+
+
+void GetVersion( unsigned char* Major, unsigned char* Minor,
+    unsigned char* Patch, unsigned char* Revision )
+{
+    if( Major )
+        *Major = PLUGIN_3D_DEMO2_MAJOR;
+
+    if( Minor )
+        *Minor = PLUGIN_3D_DEMO2_MINOR;
+
+    if( Patch )
+        *Patch = PLUGIN_3D_DEMO2_PATCH;
+
+    if( Revision )
+        *Revision = PLUGIN_3D_DEMO2_REVNO;
+
+    return;
+}
+
+
+// number of extensions supported
+#ifdef _WIN32
+#define NEXTS 1
+#else
+#define NEXTS 2
+#endif
+
+// number of filter sets supported
+#define NFILS 1
+
+static char ext0[] = "wrl";
 
 #ifdef _WIN32
-    // assume a case-insensitive file system
-    m_filters.push_back( wxT( "VRML 1.0/2.0 (*.wrl)|*.wrl" ) );
+static char fil0[] = "VRML 1.0/2.0 (*.wrl)|*.wrl";
 #else
-    // assume the filesystem is case sensitive
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "WRL" ) );
+static char ext1[] = "WRL";
 
-    m_filters.push_back( wxT( "VRML 1.0/2.0 (*.wrl;*.WRL)|*.wrl;*.WRL" ) );
+static char fil0[] = "VRML 1.0/2.0 (*.wrl;*.WRL)|*.wrl;*.WRL";
 #endif
 
 
-    return;
+static struct FILE_DATA
+{
+    char const* extensions[NEXTS];
+    char const* filters[NFILS];
+
+    FILE_DATA()
+    {
+        extensions[0] = ext0;
+        filters[0] = fil0;
+
+#ifndef _WIN32
+        extensions[1] = ext1;
+#endif
+        return;
+    }
+
+} file_data;
+
+
+int GetNExtensions( void )
+{
+    return NEXTS;
 }
 
 
-S3D_PLUGIN_TETRA::~S3D_PLUGIN_TETRA()
+char const* GetModelExtension( int aIndex )
 {
-    return;
+    if( aIndex < 0 || aIndex >= NEXTS )
+        return NULL;
+
+    return file_data.extensions[aIndex];
 }
 
 
-int S3D_PLUGIN_TETRA::GetNExtensions( void ) const
+int GetNFilters( void )
 {
-    return (int) m_extensions.size();
+    return NFILS;
 }
 
 
-const wxString S3D_PLUGIN_TETRA::GetModelExtension( int aIndex ) const
+char const* GetFileFilter( int aIndex )
 {
-    if( aIndex < 0 || aIndex >= (int) m_extensions.size() )
-        return wxString( "" );
+    if( aIndex < 0 || aIndex >= NFILS )
+        return NULL;
 
-    return m_extensions[aIndex];
+    return file_data.filters[aIndex];
 }
 
 
-int S3D_PLUGIN_TETRA::GetNFilters( void ) const
-{
-    return (int)m_filters.size();
-}
-
-
-const wxString S3D_PLUGIN_TETRA::GetFileFilter( int aIndex ) const
-{
-    if( aIndex < 0 || aIndex >= (int)m_filters.size() )
-        return wxEmptyString;
-
-    return m_filters[aIndex];
-}
-
-
-bool S3D_PLUGIN_TETRA::CanRender( void ) const
+bool CanRender( void )
 {
+    // this dummy pretends to render a VRML model
     return true;
 }
 
 
-SCENEGRAPH* S3D_PLUGIN_TETRA::Load( const wxString& aFileName )
+SCENEGRAPH* Load( char const* aFileName )
 {
     // For this demonstration we create a tetrahedron and
     // paint its faces Magenta Red Green Blue. Steps:
@@ -234,18 +281,3 @@ SCENEGRAPH* S3D_PLUGIN_TETRA::Load( const wxString& aFileName )
 
     return (SCENEGRAPH*)data;
 }
-
-
-static S3D_PLUGIN_TETRA plugin_3d_tetra;
-
-#ifndef _WIN32
-extern "C" __attribute__((__visibility__("default"))) S3D_PLUGIN* Get3DPlugin( void )
-{
-    return &plugin_3d_tetra;
-}
-#else
-extern "C" __declspec( dllexport ) S3D_PLUGIN* Get3DPlugin( void )
-    {
-        return &plugin_3d_tetra;
-    }
-#endif
diff --git a/plugins/3d/dummy/CMakeLists.txt b/plugins/3d/dummy/CMakeLists.txt
deleted file mode 100644
index 6974d1bee2..0000000000
--- a/plugins/3d/dummy/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-include_directories(
-    ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-add_library( s3d_plugin_dummy MODULE
-    s3d_plugin_dummy.cpp
-    )
-
-target_link_libraries( s3d_plugin_dummy ${wxWidgets_LIBRARIES} )
-
-if( APPLE )
-    install( TARGETS
-            s3d_plugin_dummy
-            DESTINATION /Applications/kicad.app/SharedSupport/plugins/3d
-            COMPONENT binary
-    )
-else()
-    install( TARGETS
-        s3d_plugin_dummy
-        DESTINATION lib/kicad/plugins/3d
-        COMPONENT binary
-    )
-endif()
diff --git a/plugins/3d/dummy/s3d_plugin_dummy.cpp b/plugins/3d/dummy/s3d_plugin_dummy.cpp
deleted file mode 100644
index bbaffaae32..0000000000
--- a/plugins/3d/dummy/s3d_plugin_dummy.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * This program source code file is part of KiCad, a free EDA CAD application.
- *
- * Copyright (C) 2015 Cirilo Bernardo <cirilo.bernardo@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, you may find one here:
- * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- * or you may search the http://www.gnu.org website for the version 2 license,
- * or you may write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
- */
-
-/*
- * NOTES:
- *
- * 1. Notice that the plugin class is instantiated as a static; this
- * ensures that it created an destroyed.
- */
-
-#include <iostream>
-#include <s3d_plugin_dummy.h>
-
-
-S3D_PLUGIN_DUMMY::S3D_PLUGIN_DUMMY()
-{
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "wrl" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "x3d" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "idf" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "iges" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "igs" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "stp" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "step" ) );
-
-#ifdef _WIN32
-    // assume a case-insensitive file system
-    m_filters.push_back( wxT( "VRML 1.0/2.0 (*.wrl)|*.wrl" ) );
-    m_filters.push_back( wxT( "X3D (*.x3d)|*.x3d" ) );
-    m_filters.push_back( wxT( "IDF 2.0/3.0 (*.idf)|*.idf" ) );
-    m_filters.push_back( wxT( "IGESv5.3 (*.igs;*.iges)|*.igs;*.iges" ) );
-    m_filters.push_back( wxT( "STEP (*.stp;*.step)|*.stp;*.step" ) );
-#else
-    // assume the filesystem is case sensitive
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "WRL" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "X3D" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "IDF" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "IGES" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "IGS" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "STP" ) );
-    m_extensions.push_back( wxString::FromUTF8Unchecked( "STEP" ) );
-
-    m_filters.push_back( wxT( "VRML 1.0/2.0 (*.wrl;*.WRL)|*.wrl;*.WRL" ) );
-    m_filters.push_back( wxT( "X3D (*.x3d;*.X3D)|*.x3d;*.X3D" ) );
-    m_filters.push_back( wxT( "IDF 2.0/3.0 (*.idf;*.IDF)|*.idf;*.IDF" ) );
-    m_filters.push_back( wxT( "IGESv5.3 (*.igs;*.iges;*.IGS;*.IGES)|*.igs;*.iges;*.IGS;*.IGES" ) );
-    m_filters.push_back( wxT( "STEP (*.stp;*.step;*.STP;*.STEP)|*.stp;*.step;*.STP;*.STEP" ) );
-#endif
-
-
-    return;
-}
-
-
-S3D_PLUGIN_DUMMY::~S3D_PLUGIN_DUMMY()
-{
-    return;
-}
-
-
-int S3D_PLUGIN_DUMMY::GetNExtensions( void ) const
-{
-    return (int) m_extensions.size();
-}
-
-
-const wxString S3D_PLUGIN_DUMMY::GetModelExtension( int aIndex ) const
-{
-    if( aIndex < 0 || aIndex >= (int) m_extensions.size() )
-        return wxString( "" );
-
-    return m_extensions[aIndex];
-}
-
-
-int S3D_PLUGIN_DUMMY::GetNFilters( void ) const
-{
-    return (int)m_filters.size();
-}
-
-
-const wxString S3D_PLUGIN_DUMMY::GetFileFilter( int aIndex ) const
-{
-    if( aIndex < 0 || aIndex >= (int)m_filters.size() )
-        return wxEmptyString;
-
-    return m_filters[aIndex];
-}
-
-
-bool S3D_PLUGIN_DUMMY::CanRender( void ) const
-{
-    // this dummy plugin does not support rendering of any models
-    return false;
-}
-
-
-SCENEGRAPH* S3D_PLUGIN_DUMMY::Load( const wxString& aFileName )
-{
-    // this dummy plugin does not support rendering of any models
-    return NULL;
-}
-
-
-static S3D_PLUGIN_DUMMY dummy;
-
-#ifndef _WIN32
-    extern "C" __attribute__((__visibility__("default"))) S3D_PLUGIN* Get3DPlugin( void )
-    {
-        return &dummy;
-    }
-#else
-extern "C" __declspec( dllexport ) S3D_PLUGIN* Get3DPlugin( void )
-    {
-        return &dummy;
-    }
-#endif
diff --git a/plugins/3d/idf/CMakeLists.txt b/plugins/3d/idf/CMakeLists.txt
index 70087dee62..c2f5a84e6a 100644
--- a/plugins/3d/idf/CMakeLists.txt
+++ b/plugins/3d/idf/CMakeLists.txt
@@ -11,18 +11,10 @@ add_library( s3d_plugin_idf MODULE
 set_target_properties( s3d_plugin_idf PROPERTIES
         LINK_FLAGS -L${CMAKE_BINARY_DIR}/utils/idftools )
 
-target_link_libraries( s3d_plugin_idf s3d_sg idf3 ${OPENGL_LIBRARIES} ${wxWidgets_LIBRARIES} )
+target_link_libraries( s3d_plugin_idf kicad_3dsg idf3 ${OPENGL_LIBRARIES} ${wxWidgets_LIBRARIES} )
 
-if( APPLE )
-    install( TARGETS
-            s3d_plugin_idf
-            DESTINATION /Applications/kicad.app/SharedSupport/plugins/3d
-            COMPONENT binary
+install( TARGETS
+    s3d_plugin_idf
+    DESTINATION ${KICAD_USER_PLUGIN}/3d
+    COMPONENT binary
     )
-else()
-    install( TARGETS
-        s3d_plugin_idf
-        DESTINATION lib/kicad/plugins/3d
-        COMPONENT binary
-    )
-endif()
diff --git a/plugins/3d/idf/s3d_plugin_idf.cpp b/plugins/3d/idf/s3d_plugin_idf.cpp
index 609f55a85f..50e191c976 100644
--- a/plugins/3d/idf/s3d_plugin_idf.cpp
+++ b/plugins/3d/idf/s3d_plugin_idf.cpp
@@ -33,18 +33,18 @@
 
 #define PLUGIN_3D_IDF_MAJOR 1
 #define PLUGIN_3D_IDF_MINOR 0
-#define PLUGIN_3D_IDF_REVNO 0
 #define PLUGIN_3D_IDF_PATCH 0
+#define PLUGIN_3D_IDF_REVNO 0
 
 
-KICAD_PLUGIN_EXPORT const char* GetKicadPluginName( void )
+const char* GetKicadPluginName( void )
 {
     return "PLUGIN_3D_IDF";
 }
 
 
-KICAD_PLUGIN_EXPORT void GetVersion( unsigned char* Major,
-    unsigned char* Minor, unsigned char* Revision, unsigned char* Patch )
+void GetVersion( unsigned char* Major,
+    unsigned char* Minor, unsigned char* Patch, unsigned char* Revision )
 {
     if( Major )
         *Major = PLUGIN_3D_IDF_MAJOR;
@@ -52,12 +52,12 @@ KICAD_PLUGIN_EXPORT void GetVersion( unsigned char* Major,
     if( Minor )
         *Minor = PLUGIN_3D_IDF_MINOR;
 
-    if( Revision )
-        *Revision = PLUGIN_3D_IDF_REVNO;
-
     if( Patch )
         *Patch = PLUGIN_3D_IDF_PATCH;
 
+    if( Revision )
+        *Revision = PLUGIN_3D_IDF_REVNO;
+
     return;
 }
 
@@ -72,11 +72,12 @@ KICAD_PLUGIN_EXPORT void GetVersion( unsigned char* Major,
 #define NFILS 1
 
 static char ext0[] = "idf";
-static char fil0[] = "IDF 2.0/3.0 (*.idf)|*.idf";
 
-#ifndef _WIN32
+#ifdef _WIN32
+    static char fil0[] = "IDF 2.0/3.0 (*.idf)|*.idf";
+#else
     static char ext1[] = "IDF";
-    static char fil1[] = "IDF 2.0/3.0 (*.idf;*.IDF)|*.idf;*.IDF";
+    static char fil0[] = "IDF 2.0/3.0 (*.idf;*.IDF)|*.idf;*.IDF";
 #endif
 
 static struct FILE_DATA
@@ -91,7 +92,6 @@ static struct FILE_DATA
 
 #ifndef _WIN32
         extensions[1] = ext1;
-        filters[1] = fil1;
 #endif
 
         return;
@@ -104,13 +104,13 @@ static bool PopulateVRML( VRML_LAYER& model, const std::list< IDF_OUTLINE* >* it
 static bool AddSegment( VRML_LAYER& model, IDF_SEGMENT* seg, int icont, int iseg );
 
 
-KICAD_PLUGIN_EXPORT int GetNExtensions( void )
+int GetNExtensions( void )
 {
     return NEXTS;
 }
 
 
-KICAD_PLUGIN_EXPORT char const* GetModelExtension( int aIndex )
+char const* GetModelExtension( int aIndex )
 {
     if( aIndex < 0 || aIndex >= NEXTS )
         return NULL;
@@ -119,13 +119,13 @@ KICAD_PLUGIN_EXPORT char const* GetModelExtension( int aIndex )
 }
 
 
-KICAD_PLUGIN_EXPORT int GetNFilters( void )
+int GetNFilters( void )
 {
     return NFILS;
 }
 
 
-KICAD_PLUGIN_EXPORT char const* GetFileFilter( int aIndex )
+char const* GetFileFilter( int aIndex )
 {
     if( aIndex < 0 || aIndex >= NFILS )
         return NULL;
@@ -134,14 +134,14 @@ KICAD_PLUGIN_EXPORT char const* GetFileFilter( int aIndex )
 }
 
 
-KICAD_PLUGIN_EXPORT bool CanRender( void )
+bool CanRender( void )
 {
     // this plugin supports rendering of IDF component outlines
     return true;
 }
 
 
-KICAD_PLUGIN_EXPORT SCENEGRAPH* Load( char const* aFileName )
+SCENEGRAPH* Load( char const* aFileName )
 {
     if( NULL == aFileName )
         return NULL;
diff --git a/plugins/3d/tetra/CMakeLists.txt b/plugins/3d/tetra/CMakeLists.txt
deleted file mode 100644
index e121b63b1d..0000000000
--- a/plugins/3d/tetra/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-include_directories(
-    ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-add_library( s3d_plugin_tetra MODULE
-        s3d_plugin_tetra.cpp
-        )
-
-target_link_libraries( s3d_plugin_tetra s3d_sg ${wxWidgets_LIBRARIES} )
-
-if( APPLE )
-    install( TARGETS
-            s3d_plugin_tetra
-            DESTINATION /Applications/kicad.app/SharedSupport/plugins/3d
-            COMPONENT binary
-    )
-else()
-    install( TARGETS
-        s3d_plugin_tetra
-        DESTINATION lib/kicad/plugins/3d
-        COMPONENT binary
-    )
-endif()
diff --git a/plugins/3d/tetra/s3d_plugin_tetra.h b/plugins/3d/tetra/s3d_plugin_tetra.h
deleted file mode 100644
index 19b10c4310..0000000000
--- a/plugins/3d/tetra/s3d_plugin_tetra.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * This program source code file is part of KiCad, a free EDA CAD application.
- *
- * Copyright (C) 2015 Cirilo Bernardo <cirilo.bernardo@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, you may find one here:
- * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- * or you may search the http://www.gnu.org website for the version 2 license,
- * or you may write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
- */
-
-/**
- * @file 3d_plugin_tetra.h
- * is a sample plugin which demonstrates the basic use of the SG*
- * classes for the intermediate representation of objects. The plugin
- * accepts any *.wrl filename but does not actually load any files,
- * instead the Load() routine only creates a magenta tetrahedron.
- */
-
-
-#ifndef PLUGIN_3D_TETRA_H
-#define PLUGIN_3D_TETRA_H
-
-#include <vector>
-#include <plugins/3d/3d_plugin.h>
-
-class SCENEGRAPH;
-
-class S3D_PLUGIN_TETRA : public S3D_PLUGIN
-{
-private:
-    std::vector< wxString > m_extensions;   // supported extensions
-    std::vector< wxString > m_filters;       // file filters
-
-public:
-    S3D_PLUGIN_TETRA();
-    virtual ~S3D_PLUGIN_TETRA();
-
-    virtual int GetNExtensions( void ) const;
-    virtual const wxString GetModelExtension( int aIndex ) const;
-    virtual int GetNFilters( void ) const;
-    virtual const wxString GetFileFilter( int aIndex ) const;
-
-    bool CanRender( void ) const;
-    SCENEGRAPH* Load( const wxString& aFileName );
-};
-
-#endif  // PLUGIN_3D_TETRA_H
diff --git a/plugins/ldr/3d/pluginldr3D.cpp b/plugins/ldr/3d/pluginldr3D.cpp
index 572cecc75c..abcb1e6d5d 100644
--- a/plugins/ldr/3d/pluginldr3D.cpp
+++ b/plugins/ldr/3d/pluginldr3D.cpp
@@ -28,8 +28,8 @@
 #define PLUGIN_CLASS_3D "PLUGIN_3D"
 #define PLUGIN_3D_MAJOR 1
 #define PLUGIN_3D_MINOR 0
-#define PLUGIN_3D_REVISION 0
 #define PLUGIN_3D_PATCH 0
+#define PLUGIN_3D_REVISION 0
 
 
 KICAD_PLUGIN_LDR_3D::KICAD_PLUGIN_LDR_3D()
@@ -182,9 +182,13 @@ bool KICAD_PLUGIN_LDR_3D::Open( const wxString& aFullFileName )
 void KICAD_PLUGIN_LDR_3D::Close( void )
 {
     #ifdef DEBUG
-    std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
-    std::cerr << " * [INFO] closing plugin\n";
+    if( ok )
+    {
+        std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
+        std::cerr << " * [INFO] closing plugin\n";
+    }
     #endif
+
     ok = false;
     m_getNExtensions = NULL;
     m_getModelExtension = NULL;
@@ -199,7 +203,7 @@ void KICAD_PLUGIN_LDR_3D::Close( void )
 
 
 void KICAD_PLUGIN_LDR_3D::GetLoaderVersion( unsigned char* Major, unsigned char* Minor,
-    unsigned char* Revision, unsigned char* Patch ) const
+    unsigned char* Patch, unsigned char* Revision ) const
 {
     if( Major )
         *Major = PLUGIN_3D_MAJOR;
@@ -207,12 +211,12 @@ void KICAD_PLUGIN_LDR_3D::GetLoaderVersion( unsigned char* Major, unsigned char*
     if( Minor )
         *Minor = PLUGIN_3D_MINOR;
 
-    if( Revision )
-        *Revision = PLUGIN_3D_REVISION;
-
     if( Patch )
         *Patch = PLUGIN_3D_PATCH;
 
+    if( Revision )
+        *Revision = PLUGIN_3D_REVISION;
+
     return;
 }
 
diff --git a/plugins/ldr/pluginldr.cpp b/plugins/ldr/pluginldr.cpp
index d25d190914..3dee73dc78 100644
--- a/plugins/ldr/pluginldr.cpp
+++ b/plugins/ldr/pluginldr.cpp
@@ -188,15 +188,15 @@ bool KICAD_PLUGIN_LDR::open( const wxString& aFullFileName, const char* aPluginC
     // perform a universally enforced version check (major number must match)
     unsigned char lMajor;
     unsigned char lMinor;
-    unsigned char lRevno;
     unsigned char lPatch;
+    unsigned char lRevno;
     unsigned char pMajor;
     unsigned char pMinor;
-    unsigned char pRevno;
     unsigned char pPatch;
+    unsigned char pRevno;
 
-    m_getClassVersion( &pMajor, &pMinor, &pRevno, &pPatch );
-    GetLoaderVersion( &lMajor, &lMinor, &lRevno, &lPatch );
+    m_getClassVersion( &pMajor, &pMinor, &pPatch, &pRevno );
+    GetLoaderVersion( &lMajor, &lMinor, &lPatch, &lRevno );
 
     // major version changes by definition are incompatible and
     // that is enforced here.
@@ -211,12 +211,12 @@ bool KICAD_PLUGIN_LDR::open( const wxString& aFullFileName, const char* aPluginC
         return false;
     }
 
-    if( !m_checkClassVersion( lMajor, lMinor, lRevno, lPatch ) )
+    if( !m_checkClassVersion( lMajor, lMinor, lPatch, lRevno ) )
     {
         std::ostringstream ostr;
-        ostr << "Plugin Version (" << pMajor << "." << pMinor << "." << pRevno << "." << pPatch;
+        ostr << "Plugin Version (" << pMajor << "." << pMinor << "." << pPatch << "." << pRevno;
         ostr << ") does not support Loader Version (" << pMajor << "." << pMinor;
-        ostr << "." << pRevno << "." << pPatch << ")";
+        ostr << "." << pPatch << "." << pRevno << ")";
 
         m_error = ostr.str();
         close();
@@ -307,7 +307,7 @@ char const* KICAD_PLUGIN_LDR::GetKicadPluginClass( void )
 
 
 bool KICAD_PLUGIN_LDR::GetClassVersion( unsigned char* Major, unsigned char* Minor,
-    unsigned char* Revision, unsigned char* Patch )
+    unsigned char* Patch, unsigned char* Revision )
 {
     m_error.clear();
 
@@ -317,16 +317,16 @@ bool KICAD_PLUGIN_LDR::GetClassVersion( unsigned char* Major, unsigned char* Min
     if( Minor )
         *Minor = 0;
 
-    if( Revision )
-        *Revision = 0;
-
     if( Patch )
         *Patch = 0;
 
+    if( Revision )
+        *Revision = 0;
+
     unsigned char major;
     unsigned char minor;
-    unsigned char revno;
     unsigned char patch;
+    unsigned char revno;
 
     if( !ok && !reopen() )
     {
@@ -344,7 +344,7 @@ bool KICAD_PLUGIN_LDR::GetClassVersion( unsigned char* Major, unsigned char* Min
         return false;
     }
 
-    m_getClassVersion( &major, &minor, &revno, &patch );
+    m_getClassVersion( &major, &minor, &patch, &revno );
 
     if( Major )
         *Major = major;
@@ -352,18 +352,18 @@ bool KICAD_PLUGIN_LDR::GetClassVersion( unsigned char* Major, unsigned char* Min
     if( Minor )
         *Minor = minor;
 
-    if( Revision )
-        *Revision = revno;
-
     if( Patch )
         *Patch = patch;
 
+    if( Revision )
+        *Revision = revno;
+
     return true;
 }
 
 
 bool KICAD_PLUGIN_LDR::CheckClassVersion( unsigned char Major, unsigned char Minor,
-    unsigned char Revision, unsigned char Patch )
+    unsigned char Patch, unsigned char Revision )
 {
     m_error.clear();
 
@@ -383,7 +383,7 @@ bool KICAD_PLUGIN_LDR::CheckClassVersion( unsigned char Major, unsigned char Min
         return NULL;
     }
 
-    return m_checkClassVersion( Major, Minor, Revision, Patch );
+    return m_checkClassVersion( Major, Minor, Patch, Revision );
 }
 
 
@@ -412,7 +412,7 @@ const char* KICAD_PLUGIN_LDR::GetKicadPluginName( void )
 
 
 bool KICAD_PLUGIN_LDR::GetVersion( unsigned char* Major, unsigned char* Minor,
-    unsigned char* Revision, unsigned char* Patch )
+    unsigned char* Patch, unsigned char* Revision )
 {
     m_error.clear();
 
@@ -432,7 +432,7 @@ bool KICAD_PLUGIN_LDR::GetVersion( unsigned char* Major, unsigned char* Minor,
         return false;
     }
 
-    m_getVersion( Major, Minor, Revision, Patch );
+    m_getVersion( Major, Minor, Patch, Revision );
 
     return true;
 }
diff --git a/plugins/ldr/pluginldr.h b/plugins/ldr/pluginldr.h
index 473adf4ad5..8ed0446a64 100644
--- a/plugins/ldr/pluginldr.h
+++ b/plugins/ldr/pluginldr.h
@@ -110,7 +110,7 @@ public:
      * for plugin compatibility checking.
      */
     virtual void GetLoaderVersion( unsigned char* Major, unsigned char* Minor,
-        unsigned char* Revision, unsigned char* Patch ) const = 0;
+        unsigned char* Patch, unsigned char* Revision ) const = 0;
 
     /**
      * Function Open
@@ -141,18 +141,18 @@ public:
 
     // returns false if no plugin loaded
     bool GetClassVersion( unsigned char* Major, unsigned char* Minor,
-        unsigned char* Revision, unsigned char* Patch );
+        unsigned char* Patch, unsigned char* Revision );
 
     // returns false if the class version check fails or no plugin is loaded
     bool CheckClassVersion( unsigned char Major, unsigned char Minor,
-        unsigned char Revision, unsigned char Patch );
+        unsigned char Patch, unsigned char Revision );
 
     // returns the Plugin Name or NULL if no plugin loaded
     const char* GetKicadPluginName( void );
 
     // returns false if no plugin is loaded
     bool GetVersion( unsigned char* Major, unsigned char* Minor,
-        unsigned char* Revision, unsigned char* Patch );
+        unsigned char* Patch, unsigned char* Revision );
 };
 
 #endif  // PLUGINLDR_H