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
throw new OperationCanceledException( e.getMessage( ) );
								}
								
								
								
							}
						};
						ResourcesPlugin.getWorkspace( ).run( workspaceRunnable,
								ResourcesPlugin.getWorkspace( ).getRoot( ),
								IResource.NONE,
								monitor );
					}
					catch ( CoreException e )
					{
						throw new InvocationTargetException( e );
					}
					catch ( OperationCanceledException e )
					{
						throw new InterruptedException( e.getMessage( ) );
					}
					
					if ( iteHolder[0] != null )
					{
						throw iteHolder[0];
					}
				}
				public void execute( final IProgressMonitor monitor )