Don't initialize/terminate Xerces-C++ over and over again. It leads to crash when several files are opened on startup. This could be the root cause of some startup crashes, e.g. bug #2787738 and bug #2825812.

src/wrapxerces.cpp

@@ -33,14 +33,6 @@ using namespace xercesc;
 
 WrapXerces::WrapXerces( std::string catalogPath, std::string catalogUtilityPath )
 {
-	try
-	{
-		XMLPlatformUtils::Initialize();
-	}
-	catch ( XMLException& e )
-	{
-		throw std::runtime_error ( "Cannot initialize Xerces" );
-	}
 	errorPosition = std::make_pair ( 1, 1 );
 	catalogResolver = new XercesCatalogResolver( catalogPath, catalogUtilityPath );
 }
@@ -48,7 +40,6 @@ WrapXerces::WrapXerces( std::string catalogPath, std::string catalogUtilityPath
 WrapXerces::~WrapXerces()
 {
 	delete catalogResolver;
-	XMLPlatformUtils::Terminate();	
 }
 
 bool WrapXerces::validate ( const std::string& fileName )

src/xmlcopyeditor.cpp

@@ -312,6 +312,9 @@ MyApp::~MyApp()
 	delete checker;
 	delete server;
 	delete connection;
+
+	// Terminate Xerces-C++
+	XMLPlatformUtils::Terminate();
 }
 
 bool MyApp::OnInit()
@@ -371,6 +374,10 @@ bool MyApp::OnInit()
 	{
 		wxImage::AddHandler ( new wxPNGHandler );
 		wxSystemOptions::SetOption ( _T ( "msw.remap" ), 0 );
+
+		// Initialize Xerces-C++
+		XMLPlatformUtils::Initialize();
+
 		frame = new MyFrame (
 		    _ ( "XML Copy Editor" ),
 		    config.get(),
@@ -381,6 +388,14 @@ bool MyApp::OnInit()
 		if ( frame->getHandleCommandLineFlag() )
 			frame->handleCommandLine();
 	}
+	catch ( const XMLException &e )
+	{
+		wxString error;
+		error << _ ( "Failed to initialize Xerces-c:\n" )
+		    << WrapXerces::toString ( e.getMessage() );
+		wxMessageBox ( error, _ ( "Error" ), wxOK | wxICON_ERROR );
+		return false;
+	}
 	catch ( exception &e )
 	{
 		const char *what;

src/xmlpromptgenerator.cpp

@@ -435,17 +435,6 @@ void XmlPromptGenerator::handleSchema (
 
 	std::string schemaPath = PathResolver::run ( path, ( d->auxPath.empty() ) ? d->basePath : d->auxPath);
 
-
-	try
-	{
-		XMLPlatformUtils::Initialize();
-	}
-	catch ( const XMLException& toCatch )
-	{
-		XMLPlatformUtils::Terminate();
-		return;
-	}
-
 	XercesDOMParser *parser = new XercesDOMParser();
 	parser->setDoNamespaces ( true );
 	parser->setDoSchema ( true );
@@ -455,7 +444,6 @@ void XmlPromptGenerator::handleSchema (
 	if ( !rootGrammar )
 	{
 		delete parser;
-		XMLPlatformUtils::Terminate();
 		return;
 	}
 
@@ -466,7 +454,6 @@ void XmlPromptGenerator::handleSchema (
 	{
 		delete grammar;
 		delete parser;
-		XMLPlatformUtils::Terminate();		
 		return;
 	}
 
@@ -526,7 +513,6 @@ void XmlPromptGenerator::handleSchema (
 		}
 	}
     delete parser;
-	XMLPlatformUtils::Terminate();
 }
 
 void XmlPromptGenerator::getContent (