Bug 153038 NPE when delete master page content in old report design.
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/layout/ReportEditorWithPalette.java
.getExtendedElementPoints( );
		for ( Iterator iter = points.iterator( ); iter.hasNext( ); )
		{
			ExtendedElementUIPoint point = (ExtendedElementUIPoint) iter.next( );
			if ( ( (Boolean) point.getAttribute( IExtensionConstants.ATTRIBUTE_EDITOR_SHOW_IN_DESIGNER ) ).booleanValue( ) )
			{
				IAction action = new GeneralInsertMenuAction( this,
						point.getExtensionName( ),
						point.getExtensionName( ),
						point.getExtensionName( ) );
				getSelectionActions( ).add( action.getId( ) );
				addEditPartAction( (SelectionAction) action );
			}
		}
	}
	
	
	
	
	
	
	
	
	
	
	
	protected void initializeGraphicalViewer( )
	{
		super.initializeGraphicalViewer( );
		GraphicalViewer viewer = getGraphicalViewer( );