diff --git a/3d-viewer/3d_viewer/eda_3d_viewer.cpp b/3d-viewer/3d_viewer/eda_3d_viewer.cpp
index 3f6dcfbf5d..aac7f42f9b 100644
--- a/3d-viewer/3d_viewer/eda_3d_viewer.cpp
+++ b/3d-viewer/3d_viewer/eda_3d_viewer.cpp
@@ -735,7 +735,7 @@ void EDA_3D_VIEWER_FRAME::takeScreenshot( wxCommandEvent& event )
         {
             wxString msg;
 
-            msg.Printf( _( "Insufficient permissions required to save file\n%s" ), fullFileName );
+            msg.Printf( _( "Insufficient permissions to save file '%s'." ), fullFileName );
             wxMessageBox( msg, _( "Error" ), wxOK | wxICON_ERROR, this );
             return;
         }
diff --git a/common/eda_base_frame.cpp b/common/eda_base_frame.cpp
index f6ae293535..1bc084e8d2 100644
--- a/common/eda_base_frame.cpp
+++ b/common/eda_base_frame.cpp
@@ -1035,17 +1035,17 @@ bool EDA_BASE_FRAME::IsWritable( const wxFileName& aFileName )
 
     if( fn.IsDir() && !fn.IsDirWritable() )
     {
-        msg.Printf( _( "You do not have write permissions to folder '%s'." ),
+        msg.Printf( _( "Insufficient permissions to folder '%s'." ),
                     fn.GetPath() );
     }
     else if( !fn.FileExists() && !fn.IsDirWritable() )
     {
-        msg.Printf( _( "You do not have write permissions to save file '%s' to folder '%s'." ),
+        msg.Printf( _( "Insufficient permissions to save file '%s'." ),
                     fn.GetFullName(), fn.GetPath() );
     }
     else if( fn.FileExists() && !fn.IsFileWritable() )
     {
-        msg.Printf( _( "You do not have write permissions to save file '%s'." ),
+        msg.Printf( _( "Insufficient permissions to save file '%s'." ),
                     fn.GetFullPath() );
     }
 
diff --git a/common/tool/common_control.cpp b/common/tool/common_control.cpp
index 235b3522e8..d7bfdef280 100644
--- a/common/tool/common_control.cpp
+++ b/common/tool/common_control.cpp
@@ -213,7 +213,7 @@ int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
 
         if( !helpFile )
         {
-            msg = wxString::Format( _( "Help file \"%s\" or\n\"%s\" could not be found.\n"
+            msg = wxString::Format( _( "Help file '%s' or\n'%s' could not be found.\n"
                                        "Do you want to access the KiCad online help?" ),
                                     names[0], names[1] );
             wxMessageDialog dlg( NULL, msg, _( "File Not Found" ),
@@ -233,7 +233,7 @@ int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
 
         if( !helpFile )
         {
-            msg = wxString::Format( _( "Help file \"%s\" could not be found.\n"
+            msg = wxString::Format( _( "Help file '%s' could not be found.\n"
                                        "Do you want to access the KiCad online help?" ),
                                     base_name );
             wxMessageDialog dlg( NULL, msg, _( "File Not Found" ),
diff --git a/cvpcb/cvpcb_mainframe.cpp b/cvpcb/cvpcb_mainframe.cpp
index bfeb40edda..346ee838ee 100644
--- a/cvpcb/cvpcb_mainframe.cpp
+++ b/cvpcb/cvpcb_mainframe.cpp
@@ -531,7 +531,7 @@ void CVPCB_MAINFRAME::AssociateFootprint( const CVPCB_ASSOCIATION& aAssociation,
     // Test for validity of the requested footprint
     if( !fpid.empty() && !fpid.IsValid() )
     {
-        wxString msg = wxString::Format( _( "\"%s\" is not a valid footprint." ),
+        wxString msg = wxString::Format( _( "'%s' is not a valid footprint." ),
                                          fpid.Format().wx_str() );
         DisplayErrorMessage( this, msg );
         return;
@@ -841,7 +841,7 @@ void CVPCB_MAINFRAME::SendMessageToEESCHEMA( bool aClearHighligntOnly )
     // Now highlight the selected symbol:
     COMPONENT* symbol = m_netlist.GetComponent( selection );
 
-    packet = StrPrintf( "$PART: \"%s\"", TO_UTF8( symbol->GetReference() ) );
+    packet = std::string( "$PART: \"" ) + TO_UTF8( symbol->GetReference() ) + "\"";
 
     if( Kiface().IsSingle() )
         SendCommand( MSG_TO_SCH, packet );
diff --git a/eeschema/dialogs/dialog_schematic_setup.cpp b/eeschema/dialogs/dialog_schematic_setup.cpp
index 92501bb1e4..8d1fec4532 100644
--- a/eeschema/dialogs/dialog_schematic_setup.cpp
+++ b/eeschema/dialogs/dialog_schematic_setup.cpp
@@ -147,7 +147,7 @@ void DIALOG_SCHEMATIC_SETUP::OnAuxiliaryAction( wxCommandEvent& event )
     if( !m_frame->GetSettingsManager()->LoadProject( projectFn.GetFullPath(), false ) )
     {
         wxString msg = wxString::Format( _( "Error importing settings from project:\n"
-                                            "Project file %s could not be loaded" ),
+                                            "Project file %s could not be loaded." ),
                                          projectFn.GetFullPath() );
         DisplayErrorMessage( this, msg );
 
diff --git a/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp b/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
index 3e9a009c12..a4d4b315eb 100644
--- a/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
+++ b/eeschema/sch_plugins/legacy/sch_legacy_plugin.cpp
@@ -2706,8 +2706,10 @@ void SCH_LEGACY_PLUGIN_CACHE::loadDocs()
         return;
 
     if( !fn.IsFileReadable() )
-        THROW_IO_ERROR( wxString::Format( _( "user does not have permission to read library "
-                                             "document file \"%s\"" ), fn.GetFullPath() ) );
+    {
+        THROW_IO_ERROR( wxString::Format( _( "Insufficient permissions to read library '%s'." ),
+                                          fn.GetFullPath() ) );
+    }
 
     FILE_LINE_READER reader( fn.GetFullPath() );
 
diff --git a/eeschema/sch_sheet_path.cpp b/eeschema/sch_sheet_path.cpp
index 1455362a8e..b7ff788ef0 100644
--- a/eeschema/sch_sheet_path.cpp
+++ b/eeschema/sch_sheet_path.cpp
@@ -923,7 +923,7 @@ void SCH_SHEET_LIST::UpdateSymbolInstances(
 
         if( it == aSymbolInstances.end() )
         {
-            wxLogTrace( traceSchSheetPaths, "No symbol instance found for path \"%s\"", path );
+            wxLogTrace( traceSchSheetPaths, "No symbol instance found for path '%s'", path );
             continue;
         }
 
@@ -954,7 +954,7 @@ void SCH_SHEET_LIST::UpdateSheetInstances( const std::vector<SCH_SHEET_INSTANCE>
 
         if( it == aSheetInstances.end() )
         {
-            wxLogTrace( traceSchSheetPaths, "No sheet instance found for path \"%s\"",
+            wxLogTrace( traceSchSheetPaths, "No sheet instance found for path '%s'",
                         instance.PathWithoutRootUuid().AsString() );
             continue;
         }
diff --git a/eeschema/sim/sim_plot_frame.cpp b/eeschema/sim/sim_plot_frame.cpp
index 78e7e8de94..89bfe66eb4 100644
--- a/eeschema/sim/sim_plot_frame.cpp
+++ b/eeschema/sim/sim_plot_frame.cpp
@@ -1551,7 +1551,7 @@ bool SIM_PLOT_FRAME::canCloseWindow( wxCloseEvent& aEvent )
         if( filename.GetName().IsEmpty() )
             filename.SetFullName( Prj().GetProjectName() + wxT( ".wbk" ) );
 
-        wxString msg = _( "Save changes to \"%s\" before closing?" );
+        wxString msg = _( "Save changes to '%s' before closing?" );
 
         return HandleUnsavedChanges( this, wxString::Format( msg, filename.GetFullName() ), 
                 [&]()->bool
diff --git a/eeschema/sim/spice_value.cpp b/eeschema/sim/spice_value.cpp
index 5cf604c0e6..26649f5d12 100644
--- a/eeschema/sim/spice_value.cpp
+++ b/eeschema/sim/spice_value.cpp
@@ -274,8 +274,8 @@ bool SPICE_VALIDATOR::Validate( wxWindow* aParent )
     }
     catch( ... )
     {
-        DisplayError( aParent,
-                wxString::Format( _( "\"%s\" is not a valid Spice value" ), text->GetValue() ) );
+        DisplayError( aParent, wxString::Format( _( "'%s' is not a valid Spice value." ),
+                                                 text->GetValue() ) );
 
         return false;
     }
diff --git a/eeschema/symbol_editor/symbol_edit_frame.cpp b/eeschema/symbol_editor/symbol_edit_frame.cpp
index 7f1a51e71c..7b17dc39b5 100644
--- a/eeschema/symbol_editor/symbol_edit_frame.cpp
+++ b/eeschema/symbol_editor/symbol_edit_frame.cpp
@@ -822,7 +822,7 @@ bool SYMBOL_EDIT_FRAME::AddLibraryFile( bool aCreateNew )
 
     if( m_libMgr->LibraryExists( libName ) )
     {
-        DisplayError( this, wxString::Format( _( "Library \"%s\" already exists" ), libName ) );
+        DisplayError( this, wxString::Format( _( "Library '%s' already exists." ), libName ) );
         return false;
     }
 
@@ -831,7 +831,7 @@ bool SYMBOL_EDIT_FRAME::AddLibraryFile( bool aCreateNew )
         if( !m_libMgr->CreateLibrary( fn.GetFullPath(), libTable ) )
         {
             DisplayError( this, wxString::Format( _( "Could not create the library file '%s'.\n"
-                                                     "Check write permission." ),
+                                                     "Make sure you have write permissions and try again." ),
                                                   fn.GetFullPath() ) );
             return false;
         }
@@ -1031,7 +1031,7 @@ bool SYMBOL_EDIT_FRAME::backupFile( const wxFileName& aOriginalFile, const wxStr
 
         if( !wxCopyFile( aOriginalFile.GetFullPath(), backupFileName.GetFullPath() ) )
         {
-            DisplayError( this, wxString::Format( _( "Failed to save backup to \"%s\"" ),
+            DisplayError( this, wxString::Format( _( "Failed to save backup to '%s'." ),
                                                   backupFileName.GetFullPath() ) );
             return false;
         }
diff --git a/eeschema/symbol_editor/symbol_editor_import_export.cpp b/eeschema/symbol_editor/symbol_editor_import_export.cpp
index bb937f5c9d..95ef995995 100644
--- a/eeschema/symbol_editor/symbol_editor_import_export.cpp
+++ b/eeschema/symbol_editor/symbol_editor_import_export.cpp
@@ -163,7 +163,7 @@ void SYMBOL_EDIT_FRAME::ExportSymbol()
 
     if( fn.Exists() && !fn.IsDirWritable() )
     {
-        msg.Printf( _( "Write permissions are required to save library '%s'." ),
+        msg.Printf( _( "Insufficient permissions to save library '%s'." ),
                     fn.GetFullPath() );
         DisplayError( this, msg );
         return;
diff --git a/eeschema/symbol_library.cpp b/eeschema/symbol_library.cpp
index 4826a23935..096595a84a 100644
--- a/eeschema/symbol_library.cpp
+++ b/eeschema/symbol_library.cpp
@@ -23,10 +23,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  */
 
-/**
- * @file class_library.cpp
- */
-
 #include <algorithm>
 #include <kiface_i.h>
 #include <eda_base_frame.h>
@@ -47,12 +43,6 @@
 #include <wx/log.h>
 #include <wx/progdlg.h>
 #include <wx/tokenzr.h>
-#include <wx/regex.h>
-
-#define DUPLICATE_NAME_MSG  \
-    _(  "Library \"%s\" has duplicate entry name \"%s\".\n" \
-        "This may cause some unexpected behavior when loading symbols into a schematic." )
-
 
 SYMBOL_LIB::SYMBOL_LIB( SCH_LIB_TYPE aType, const wxString& aFileName,
                     SCH_IO_MGR::SCH_FILE_T aPluginType ) :
@@ -581,9 +571,10 @@ void SYMBOL_LIBS::LoadAllLibraries( PROJECT* aProject, bool aShowProgress )
         }
         catch( const IO_ERROR& ioe )
         {
-            wxString msg =
-                    wxString::Format( _( "Symbol library \"%s\" failed to load.\nError: %s" ),
-                            cache_name, ioe.What() );
+            wxString msg = wxString::Format( _( "Error loading symbol library '%s'." )
+                                             + wxS( "\n%s" ),
+                                             cache_name,
+                                             ioe.What() );
 
             THROW_IO_ERROR( msg );
         }
diff --git a/kicad/tools/kicad_manager_control.cpp b/kicad/tools/kicad_manager_control.cpp
index b58836a856..84a4d7f70d 100644
--- a/kicad/tools/kicad_manager_control.cpp
+++ b/kicad/tools/kicad_manager_control.cpp
@@ -225,9 +225,8 @@ int KICAD_MANAGER_CONTROL::NewFromTemplate( const TOOL_EVENT& aEvent )
     {
         wxString msg;
 
-        msg.Printf( _( "Cannot write to folder '%s'." ), fn.GetPath() );
+        msg.Printf( _( "Insufficient permissions to write to folder '%s'." ), fn.GetPath() );
         wxMessageDialog msgDlg( m_frame, msg, _( "Error" ), wxICON_ERROR | wxOK | wxCENTER );
-        msgDlg.SetExtendedMessage( _( "Make sure you have write permissions and try again." ) );
         msgDlg.ShowModal();
         return -1;
     }
@@ -536,7 +535,7 @@ int KICAD_MANAGER_CONTROL::SaveProjectAs( const TOOL_EVENT& aEvent )
 
     if( !wxMkdir( newProjectDir.GetFullPath() ) )
     {
-        msg.Printf( _( "Directory '%s' could not be created.\n\n"
+        msg.Printf( _( "Folder '%s' could not be created.\n\n"
                        "Please make sure you have write permissions and try again." ),
                     newProjectDir.GetPath() );
         DisplayErrorMessage( m_frame, msg );
@@ -545,10 +544,9 @@ int KICAD_MANAGER_CONTROL::SaveProjectAs( const TOOL_EVENT& aEvent )
 
     if( !newProjectDir.IsDirWritable() )
     {
-        msg.Printf( _( "Cannot write to folder '%s'." ), newProjectDir.GetFullPath() );
+        msg.Printf( _( "Insufficient permissions to write to folder '%s'." ),
+                    newProjectDir.GetFullPath() );
         wxMessageDialog msgDlg( m_frame, msg, _( "Error!" ), wxICON_ERROR | wxOK | wxCENTER );
-        msgDlg.SetExtendedMessage( _( "Please check your access permissions to this folder "
-                                      "and try again." ) );
         msgDlg.ShowModal();
         return -1;
     }
diff --git a/pagelayout_editor/files.cpp b/pagelayout_editor/files.cpp
index 2c47e2cf9e..d7960be7f6 100644
--- a/pagelayout_editor/files.cpp
+++ b/pagelayout_editor/files.cpp
@@ -169,12 +169,12 @@ void PL_EDITOR_FRAME::Files_io( wxCommandEvent& event )
     case wxID_SAVE:
         if( !SaveDrawingSheetFile( filename ) )
         {
-            msg.Printf( _( "Unable to write \"%s\"" ), filename );
+            msg.Printf( _( "Unable to write '%s'." ), filename );
             DisplayErrorMessage( this, msg );
         }
         else
         {
-            msg.Printf( _("File \"%s\" saved."), filename );
+            msg.Printf( _("File '%s' saved."), filename );
             SetStatusText( msg );
         }
         break;
diff --git a/pcbnew/dialogs/dialog_create_array.cpp b/pcbnew/dialogs/dialog_create_array.cpp
index b3802aa799..f8f507990c 100644
--- a/pcbnew/dialogs/dialog_create_array.cpp
+++ b/pcbnew/dialogs/dialog_create_array.cpp
@@ -296,8 +296,8 @@ static bool validateAxisOptions( const wxTextCtrl& offsetEntry, const wxChoice&
 
     if( !ok )
     {
-        errors.Add( wxString::Format( _( "Could not determine numbering start from \"%s\": "
-                                         "expected value consistent with alphabet \"%s\"" ),
+        errors.Add( wxString::Format( _( "Could not determine numbering start from '%s': "
+                                         "expected value consistent with alphabet '%s'." ),
                                       text,
                                       aAxis.GetAlphabet() ) );
         return false;
diff --git a/pcbnew/dialogs/dialog_export_svg.cpp b/pcbnew/dialogs/dialog_export_svg.cpp
index 59540b29c0..c30e3b73fb 100644
--- a/pcbnew/dialogs/dialog_export_svg.cpp
+++ b/pcbnew/dialogs/dialog_export_svg.cpp
@@ -261,7 +261,7 @@ void DIALOG_EXPORT_SVG::ExportSVGFile( bool aOnlyOneFile )
 
     if( !EnsureFileDirectoryExists( &outputDir, boardFilename, &reporter ) )
     {
-        wxString msg = wxString::Format( _( "Could not write plot files to folder \"%s\"." ),
+        wxString msg = wxString::Format( _( "Could not write plot files to folder '%s'." ),
                                          outputDir.GetPath() );
         DisplayError( this, msg );
         return;
@@ -288,11 +288,12 @@ void DIALOG_EXPORT_SVG::ExportSVGFile( bool aOnlyOneFile )
 
         if( CreateSVGFile( svgPath ) )
         {
-            reporter.Report( wxString::Format( _( "Exported \"%s\"." ), svgPath ), RPT_SEVERITY_ACTION );
+            reporter.Report( wxString::Format( _( "Exported '%s'." ), svgPath ),
+                             RPT_SEVERITY_ACTION );
         }
         else    // Error
         {
-            reporter.Report( wxString::Format( _( "Unable to create file \"%s\"." ), svgPath ),
+            reporter.Report( wxString::Format( _( "Unable to create '%s'." ), svgPath ),
                              RPT_SEVERITY_ERROR );
         }
 
diff --git a/pcbnew/dialogs/dialog_fp_plugin_options.cpp b/pcbnew/dialogs/dialog_fp_plugin_options.cpp
index fd027ff990..fc01df1bb3 100644
--- a/pcbnew/dialogs/dialog_fp_plugin_options.cpp
+++ b/pcbnew/dialogs/dialog_fp_plugin_options.cpp
@@ -59,7 +59,7 @@ public:
         m_initial_help( INITIAL_HELP ),
         m_grid_widths_dirty( true )
     {
-        SetTitle( wxString::Format( _( "Options for Library \"%s\"" ), aNickname ) );
+        SetTitle( wxString::Format( _( "Options for Library '%s'" ), aNickname ) );
 
         // Give a bit more room for combobox editors
         m_grid->SetDefaultRowSize( m_grid->GetDefaultRowSize() + 4 );
diff --git a/pcbnew/drc/drc_engine.cpp b/pcbnew/drc/drc_engine.cpp
index 2808076012..a260035f28 100644
--- a/pcbnew/drc/drc_engine.cpp
+++ b/pcbnew/drc/drc_engine.cpp
@@ -1003,7 +1003,7 @@ DRC_CONSTRAINT DRC_ENGINE::EvalRules( DRC_CONSTRAINT_T aConstraintId, const BOAR
                     }
                     else
                     {
-                        REPORT( wxString::Format( _( "Checking rule condition \"%s\"." ),
+                        REPORT( wxString::Format( _( "Checking rule condition '%s'." ),
                                                   EscapeHTML( c->condition->GetExpression() ) ) )
                     }
 
diff --git a/pcbnew/exporters/export_d356.cpp b/pcbnew/exporters/export_d356.cpp
index c62640e526..14e026409e 100644
--- a/pcbnew/exporters/export_d356.cpp
+++ b/pcbnew/exporters/export_d356.cpp
@@ -338,7 +338,7 @@ void IPC356D_WRITER::Write( const wxString& aFilename )
     if( ( file = wxFopen( aFilename, wxT( "wt" ) ) ) == nullptr )
     {
         wxString details;
-        details.Printf( "The file %s could not be opened for writing", aFilename );
+        details.Printf( "The file %s could not be opened for writing.", aFilename );
         DisplayErrorMessage( m_parent, "Could not write IPC-356D file!", details );
         return;
     }
diff --git a/pcbnew/exporters/export_footprint_associations.cpp b/pcbnew/exporters/export_footprint_associations.cpp
index 4923d5e716..16b6ed1fb9 100644
--- a/pcbnew/exporters/export_footprint_associations.cpp
+++ b/pcbnew/exporters/export_footprint_associations.cpp
@@ -80,6 +80,6 @@ void PCB_EDIT_FRAME::RecreateCmpFileFromBoard( wxCommandEvent& aEvent )
     wxString path = dlg.GetPath();
 
     if( !RecreateCmpFile( GetBoard(), path ) )
-        DisplayError( this, wxString::Format( _( "Could not create file \"%s\"." ), path ) );
+        DisplayError( this, wxString::Format( _( "Could not create file '%s'." ), path ) );
 }
 
diff --git a/pcbnew/files.cpp b/pcbnew/files.cpp
index 9d5c864dfd..cc78b3ad0e 100644
--- a/pcbnew/files.cpp
+++ b/pcbnew/files.cpp
@@ -942,7 +942,7 @@ bool PCB_EDIT_FRAME::SavePcbFile( const wxString& aFileName, bool addToHistory,
 
     if( !IsWritable( pcbFileName ) )
     {
-        wxString msg = wxString::Format( _( "No access rights to write to file \"%s\"" ),
+        wxString msg = wxString::Format( _( "Insufficient permissions to write file '%s'." ),
                                          pcbFileName.GetFullPath() );
 
         DisplayError( this, msg );
@@ -1081,7 +1081,7 @@ bool PCB_EDIT_FRAME::SavePcbCopy( const wxString& aFileName, bool aCreateProject
 
     if( !IsWritable( pcbFileName ) )
     {
-        DisplayError( this, wxString::Format( _( "No access rights to write to file '%s'." ),
+        DisplayError( this, wxString::Format( _( "Insufficient permissions to write file '%s'." ),
                                               pcbFileName.GetFullPath() ) );
         return false;
     }
diff --git a/pcbnew/footprint_edit_frame.cpp b/pcbnew/footprint_edit_frame.cpp
index f2273d6e55..aabf63e7d2 100644
--- a/pcbnew/footprint_edit_frame.cpp
+++ b/pcbnew/footprint_edit_frame.cpp
@@ -619,7 +619,7 @@ bool FOOTPRINT_EDIT_FRAME::canCloseWindow( wxCloseEvent& aEvent )
         }
 
         wxString footprintName = GetBoard()->GetFirstFootprint()->GetFPID().GetLibItemName();
-        wxString msg = _( "Save changes to \"%s\" before closing?" );
+        wxString msg = _( "Save changes to '%s' before closing?" );
 
         if( !HandleUnsavedChanges( this, wxString::Format( msg, footprintName ),
                                    [&]() -> bool
diff --git a/pcbnew/footprint_libraries_utils.cpp b/pcbnew/footprint_libraries_utils.cpp
index 5440ed14a7..63a14fdc27 100644
--- a/pcbnew/footprint_libraries_utils.cpp
+++ b/pcbnew/footprint_libraries_utils.cpp
@@ -356,7 +356,7 @@ void FOOTPRINT_EDIT_FRAME::ExportFootprint( FOOTPRINT* aFootprint )
 
         if( fp == nullptr )
         {
-            wxMessageBox( wxString::Format( _( "Unable to create or write file '%s'." ),
+            wxMessageBox( wxString::Format( _( "Insufficient permissions to write file '%s'." ),
                                             dlg.GetPath() ) );
             return;
         }
diff --git a/pcbnew/plugins/altium/altium_pcb.cpp b/pcbnew/plugins/altium/altium_pcb.cpp
index 6def840e59..1c6876119c 100644
--- a/pcbnew/plugins/altium/altium_pcb.cpp
+++ b/pcbnew/plugins/altium/altium_pcb.cpp
@@ -1309,9 +1309,10 @@ void ALTIUM_PCB::ParseModelsData( const CFB::CompoundFileReader& aReader,
         aReader.ReadFile( stepEntry, 0, stepContent.get(), stepSize );
 
         wxFileName storagePath( altiumModelsPath.GetPath(), elem.name );
+
         if( !storagePath.IsDirWritable() )
         {
-            wxLogError( _( "You do not have write permissions to save file '%s'." ),
+            wxLogError( _( "Insufficient permissions to save file '%s'." ),
                         storagePath.GetFullPath() );
             continue;
         }
diff --git a/pcbnew/plugins/geda/gpcb_plugin.cpp b/pcbnew/plugins/geda/gpcb_plugin.cpp
index baa226e7c7..aeed527906 100644
--- a/pcbnew/plugins/geda/gpcb_plugin.cpp
+++ b/pcbnew/plugins/geda/gpcb_plugin.cpp
@@ -979,7 +979,7 @@ bool GPCB_PLUGIN::FootprintLibDelete( const wxString& aLibraryPath, const PROPER
 
     if( !fn.IsDirWritable() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "user does not have permission to delete directory \"%s\"" ),
+        THROW_IO_ERROR( wxString::Format( _( "Insufficient permissions to delete folder '%s'." ),
                                           aLibraryPath.GetData() ) );
     }
 
@@ -987,7 +987,7 @@ bool GPCB_PLUGIN::FootprintLibDelete( const wxString& aLibraryPath, const PROPER
 
     if( dir.HasSubDirs() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "library directory \"%s\" has unexpected sub-directories" ),
+        THROW_IO_ERROR( wxString::Format( _( "Library folder '%s' has unexpected sub-folders." ),
                                           aLibraryPath.GetData() ) );
     }
 
diff --git a/pcbnew/plugins/kicad/kicad_plugin.cpp b/pcbnew/plugins/kicad/kicad_plugin.cpp
index f330e0a5c2..8e9d3c16eb 100644
--- a/pcbnew/plugins/kicad/kicad_plugin.cpp
+++ b/pcbnew/plugins/kicad/kicad_plugin.cpp
@@ -169,13 +169,13 @@ void FP_CACHE::Save( FOOTPRINT* aFootprint )
 
     if( !m_lib_path.DirExists() && !m_lib_path.Mkdir() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Cannot create footprint library path \"%s\"" ),
+        THROW_IO_ERROR( wxString::Format( _( "Cannot create footprint library path '%s'." ),
                                           m_lib_raw_path ) );
     }
 
     if( !m_lib_path.IsDirWritable() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Footprint library path \"%s\" is read only" ),
+        THROW_IO_ERROR( wxString::Format( _( "Footprint library path '%s' is read only." ),
                                           m_lib_raw_path ) );
     }
 
@@ -195,7 +195,7 @@ void FP_CACHE::Save( FOOTPRINT* aFootprint )
         // Allow file output stream to go out of scope to close the file stream before
         // renaming the file.
         {
-            wxLogTrace( traceKicadPcbPlugin, wxT( "Creating temporary library file %s" ),
+            wxLogTrace( traceKicadPcbPlugin, wxT( "Creating temporary library file '%s'." ),
                     tempFileName );
 
             FILE_OUTPUTFORMATTER formatter( tempFileName );
@@ -213,9 +213,9 @@ void FP_CACHE::Save( FOOTPRINT* aFootprint )
 
         if( !wxRenameFile( tempFileName, fn.GetFullPath() ) )
         {
-            wxString msg = wxString::Format(
-                    _( "Cannot rename temporary file \"%s\" to footprint library file \"%s\"" ),
-                    tempFileName, fn.GetFullPath() );
+            wxString msg = wxString::Format( _( "Cannot rename temporary file '%s' to '%s'" ),
+                                             tempFileName,
+                                             fn.GetFullPath() );
             THROW_IO_ERROR( msg );
         }
 #endif
@@ -296,7 +296,7 @@ void FP_CACHE::Remove( const wxString& aFootprintName )
 
     if( it == m_footprints.end() )
     {
-        wxString msg = wxString::Format( _( "library \"%s\" has no footprint \"%s\" to delete" ),
+        wxString msg = wxString::Format( _( "Library '%s' has no footprint '%s'." ),
                                          m_lib_raw_path,
                                          aFootprintName );
         THROW_IO_ERROR( msg );
@@ -2400,7 +2400,7 @@ void PCB_IO::FootprintSave( const wxString& aLibraryPath, const FOOTPRINT* aFoot
     {
         if( !m_cache->Exists() )
         {
-            const wxString msg = wxString::Format( _( "Library \"%s\" does not exist.\n"
+            const wxString msg = wxString::Format( _( "Library '%s' does not exist.\n"
                                                       "Would you like to create it?"),
                                                       aLibraryPath );
 
@@ -2412,7 +2412,7 @@ void PCB_IO::FootprintSave( const wxString& aLibraryPath, const FOOTPRINT* aFoot
         }
         else
         {
-            wxString msg = wxString::Format( _( "Library \"%s\" is read only" ), aLibraryPath );
+            wxString msg = wxString::Format( _( "Library '%s' is read only." ), aLibraryPath );
             THROW_IO_ERROR( msg );
         }
     }
@@ -2430,13 +2430,13 @@ void PCB_IO::FootprintSave( const wxString& aLibraryPath, const FOOTPRINT* aFoot
 
     if( !fn.IsOk() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Footprint file name \"%s\" is not valid." ),
+        THROW_IO_ERROR( wxString::Format( _( "Footprint file name '%s' is not valid." ),
                                           fn.GetFullPath() ) );
     }
 
     if( fn.FileExists() && !fn.IsFileWritable() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "No write permissions to delete file \"%s\"" ),
+        THROW_IO_ERROR( wxString::Format( _( "Insufficient permissions to delete '%s'." ),
                                           fn.GetFullPath() ) );
     }
 
@@ -2488,7 +2488,7 @@ void PCB_IO::FootprintDelete( const wxString& aLibraryPath, const wxString& aFoo
 
     if( !m_cache->IsWritable() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Library \"%s\" is read only." ),
+        THROW_IO_ERROR( wxString::Format( _( "Library '%s' is read only." ),
                                           aLibraryPath.GetData() ) );
     }
 
@@ -2507,7 +2507,7 @@ void PCB_IO::FootprintLibCreate( const wxString& aLibraryPath, const PROPERTIES*
 {
     if( wxDir::Exists( aLibraryPath ) )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Cannot overwrite library path \"%s\"." ),
+        THROW_IO_ERROR( wxString::Format( _( "Cannot overwrite library path '%s'." ),
                                           aLibraryPath.GetData() ) );
     }
 
@@ -2532,8 +2532,7 @@ bool PCB_IO::FootprintLibDelete( const wxString& aLibraryPath, const PROPERTIES*
 
     if( !fn.IsDirWritable() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "User does not have permission to delete directory "
-                                             "\"%s\"." ),
+        THROW_IO_ERROR( wxString::Format( _( "Insufficient permissions to delete folder '%s'." ),
                                           aLibraryPath.GetData() ) );
     }
 
@@ -2541,8 +2540,7 @@ bool PCB_IO::FootprintLibDelete( const wxString& aLibraryPath, const PROPERTIES*
 
     if( dir.HasSubDirs() )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Library directory \"%s\" has unexpected "
-                                             "sub-directories." ),
+        THROW_IO_ERROR( wxString::Format( _( "Library folder '%s' has unexpected sub-folders." ),
                                           aLibraryPath.GetData() ) );
     }
 
@@ -2561,9 +2559,10 @@ bool PCB_IO::FootprintLibDelete( const wxString& aLibraryPath, const PROPERTIES*
 
             if( tmp.GetExt() != KiCadFootprintFileExtension )
             {
-                THROW_IO_ERROR( wxString::Format( _( "Unexpected file \"%s\" was found in "
-                                                     "library path \"%s\"." ),
-                                                  files[i].GetData(), aLibraryPath.GetData() ) );
+                THROW_IO_ERROR( wxString::Format( _( "Unexpected file '%s' found in library "
+                                                     "path '%s'." ),
+                                                  files[i].GetData(),
+                                                  aLibraryPath.GetData() ) );
             }
         }
 
@@ -2571,14 +2570,14 @@ bool PCB_IO::FootprintLibDelete( const wxString& aLibraryPath, const PROPERTIES*
             wxRemoveFile( files[i] );
     }
 
-    wxLogTrace( traceKicadPcbPlugin, wxT( "Removing footprint library \"%s\"." ),
+    wxLogTrace( traceKicadPcbPlugin, wxT( "Removing footprint library '%s'." ),
                 aLibraryPath.GetData() );
 
     // Some of the more elaborate wxRemoveFile() crap puts up its own wxLog dialog
     // we don't want that.  we want bare metal portability with no UI here.
     if( !wxRmdir( aLibraryPath ) )
     {
-        THROW_IO_ERROR( wxString::Format( _( "Footprint library \"%s\" cannot be deleted." ),
+        THROW_IO_ERROR( wxString::Format( _( "Footprint library '%s' cannot be deleted." ),
                                           aLibraryPath.GetData() ) );
     }
 
diff --git a/pcbnew/plugins/kicad/pcb_parser.cpp b/pcbnew/plugins/kicad/pcb_parser.cpp
index 28b9ee7041..e20e197711 100644
--- a/pcbnew/plugins/kicad/pcb_parser.cpp
+++ b/pcbnew/plugins/kicad/pcb_parser.cpp
@@ -171,7 +171,7 @@ double PCB_PARSER::parseDouble()
     if( errno )
     {
         wxString error;
-        error.Printf( _( "Invalid floating point number in\nfile: \"%s\"\nline: %d\noffset: %d" ),
+        error.Printf( _( "Invalid floating point number in\nfile: '%s'\nline: %d\noffset: %d" ),
                       CurSource(), CurLineNumber(), CurOffset() );
 
         THROW_IO_ERROR( error );
@@ -180,7 +180,7 @@ double PCB_PARSER::parseDouble()
     if( CurText() == tmp )
     {
         wxString error;
-        error.Printf( _( "Missing floating point number in\nfile: \"%s\"\nline: %d\noffset: %d" ),
+        error.Printf( _( "Missing floating point number in\nfile: '%s'\nline: %d\noffset: %d" ),
                       CurSource(), CurLineNumber(), CurOffset() );
 
         THROW_IO_ERROR( error );
@@ -570,7 +570,7 @@ BOARD_ITEM* PCB_PARSER::Parse()
 
     default:
         wxString err;
-        err.Printf( _( "Unknown token \"%s\"" ), FromUTF8() );
+        err.Printf( _( "Unknown token '%s'" ), FromUTF8() );
         THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
     }
 
@@ -736,7 +736,7 @@ BOARD* PCB_PARSER::parseBOARD_unchecked()
 
         default:
             wxString err;
-            err.Printf( _( "Unknown token \"%s\"" ), FromUTF8() );
+            err.Printf( _( "Unknown token '%s'" ), FromUTF8() );
             THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
         }
     }
@@ -1007,7 +1007,7 @@ void PCB_PARSER::parsePAGE_INFO()
     if( !pageInfo.SetType( pageType ) )
     {
         wxString err;
-        err.Printf( _( "Page type \"%s\" is not valid " ), FromUTF8() );
+        err.Printf( _( "Page type '%s' is not valid." ), FromUTF8() );
         THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
     }
 
@@ -1537,13 +1537,12 @@ void PCB_PARSER::parseLayers()
 
             if( it == m_layerIndices.end() )
             {
-                wxString error = wxString::Format(
-                    _( "Layer \"%s\" in file \"%s\" at line %d, is not in fixed layer hash" ),
-                    layer.m_name,
-                    CurSource(),
-                    CurLineNumber(),
-                    CurOffset()
-                    );
+                wxString error;
+                error.Printf( _( "Layer '%s' in file '%s' at line %d is not in fixed layer hash." ),
+                              layer.m_name,
+                              CurSource(),
+                              CurLineNumber(),
+                              CurOffset() );
 
                 THROW_IO_ERROR( error );
             }
@@ -2219,8 +2218,11 @@ void PCB_PARSER::parseNETCLASS()
         // unique_ptr will delete nc on this code path
 
         wxString error;
-        error.Printf( _( "Duplicate NETCLASS name \"%s\" in file \"%s\" at line %d, offset %d" ),
-                      nc->GetName().GetData(), CurSource().GetData(), CurLineNumber(), CurOffset() );
+        error.Printf( _( "Duplicate NETCLASS name '%s' in file '%s' at line %d, offset %d." ),
+                      nc->GetName().GetData(),
+                      CurSource().GetData(),
+                      CurLineNumber(),
+                      CurOffset() );
         THROW_IO_ERROR( error );
     }
 }
@@ -3063,8 +3065,10 @@ FOOTPRINT* PCB_PARSER::parseFOOTPRINT_unchecked( wxArrayString* aInitialComments
     if( !name.IsEmpty() && fpid.Parse( name, true ) >= 0 )
     {
         wxString error;
-        error.Printf( _( "Invalid footprint ID in\nfile: \"%s\"\nline: %d\noffset: %d" ),
-                      CurSource(), CurLineNumber(), CurOffset() );
+        error.Printf( _( "Invalid footprint ID in\nfile: '%s'\nline: %d\noffset: %d." ),
+                      CurSource(),
+                      CurLineNumber(),
+                      CurOffset() );
         THROW_IO_ERROR( error );
     }
 
@@ -4463,8 +4467,10 @@ PCB_ARC* PCB_PARSER::parseARC()
         case T_net:
             if( !arc->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
                 THROW_IO_ERROR( wxString::Format(
-                        _( "Invalid net ID in\nfile: \"%s\"\nline: %d\noffset: %d" ), CurSource(),
-                        CurLineNumber(), CurOffset() ) );
+                        _( "Invalid net ID in\nfile: '%s'\nline: %d\noffset: %d." ),
+                        CurSource(),
+                        CurLineNumber(),
+                        CurOffset() ) );
             break;
 
         case T_tstamp:
@@ -4541,7 +4547,7 @@ PCB_TRACK* PCB_PARSER::parsePCB_TRACK()
         case T_net:
             if( !track->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
                 THROW_IO_ERROR( wxString::Format(
-                        _( "Invalid net ID in\nfile: \"%s\"\nline: %d\noffset: %d" ), CurSource(),
+                        _( "Invalid net ID in\nfile: '%s'\nline: %d\noffset: %d." ), CurSource(),
                         CurLineNumber(), CurOffset() ) );
             break;
 
@@ -4745,8 +4751,10 @@ ZONE* PCB_PARSER::parseZONE( BOARD_ITEM_CONTAINER* aParent )
 
             if( !zone->SetNetCode( tmp, /* aNoAssert */ true ) )
                 THROW_IO_ERROR( wxString::Format(
-                        _( "Invalid net ID in\nfile: \"%s\"\nline: %d\noffset: %d" ), CurSource(),
-                        CurLineNumber(), CurOffset() ) );
+                        _( "Invalid net ID in\n file: '%s;\nline: %d\noffset: %d." ),
+                        CurSource(),
+                        CurLineNumber(),
+                        CurOffset() ) );
 
             NeedRIGHT();
             break;
diff --git a/pcbnew/specctra_import_export/specctra_export.cpp b/pcbnew/specctra_import_export/specctra_export.cpp
index 1779114271..f60a90ed41 100644
--- a/pcbnew/specctra_import_export/specctra_export.cpp
+++ b/pcbnew/specctra_import_export/specctra_export.cpp
@@ -1026,7 +1026,7 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard )
             if( footprint->GetReference() == wxEmptyString )
             {
                 THROW_IO_ERROR( wxString::Format(
-                        _( "Symbol with value of \"%s\" has empty reference id." ),
+                        _( "Symbol with value of '%s' has empty reference id." ),
                         footprint->GetValue() ) );
             }
 
@@ -1036,7 +1036,7 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard )
             if( !refpair.second )      // insert failed
             {
                 THROW_IO_ERROR( wxString::Format(
-                        _( "Multiple symbols have identical reference IDs of \"%s\"." ),
+                        _( "Multiple symbols have identical reference IDs of '%s'." ),
                         footprint->GetReference() ) );
             }
         }
diff --git a/pcbnew/specctra_import_export/specctra_import.cpp b/pcbnew/specctra_import_export/specctra_import.cpp
index 8726cd66af..bd78ebd0df 100644
--- a/pcbnew/specctra_import_export/specctra_import.cpp
+++ b/pcbnew/specctra_import_export/specctra_import.cpp
@@ -163,9 +163,8 @@ PCB_TRACK* SPECCTRA_DB::makeTRACK( PATH* aPath, int aPointIndex, int aNetcode )
 
     if( layerNdx == -1 )
     {
-        wxString layerName = FROM_UTF8( aPath->layer_id.c_str() );
-        THROW_IO_ERROR(
-                wxString::Format( _( "Session file uses invalid layer id \"%s\"" ), layerName ) );
+        THROW_IO_ERROR( wxString::Format( _( "Session file uses invalid layer id '%s'." ),
+                                          FROM_UTF8( aPath->layer_id.c_str() ) ) );
     }
 
     PCB_TRACK* track = new PCB_TRACK( m_sessionBoard );