Bug 214714 [Regression] Can't preview SVG image in Report Template dialog when new a report design [02]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ThumbnailBuilder.java
String fileName = null;
			AddImageResourceFileFolderSelectionDialog dlg = new AddImageResourceFileFolderSelectionDialog( );
			if ( dlg.open( ) != Window.OK )
			{
				return;
			}
			fileName = dlg.getPath( );
			if ( fileName == null || fileName.trim( ).length( ) == 0 )
			{
				return;
			}
			URL url = getModuleHandle( ).findResource( fileName,
					IResourceLocator.IMAGE );
			imageName = fileName;
			try
			{
				fileName = FileLocator.resolve( url ).getPath( );
			}
			catch ( IOException e )
			{
				logger.log( Level.SEVERE, e.getMessage( ), e );
			}
			if ( checkExtensions( fileName ) == false )
			{
				ExceptionHandler.openErrorMessageBox( Messages.getString( "ThumbnailBuilder.FileDialog.FileNameError.Title" ), 
						Messages.getString( "ThumbnailBuilder.FileDialog.FileNameError.Message" ) ); 
				return;
			}
			removeImage( );
			hasThumbnail = true;