Bug 132506 [Regression][Linux WS]Error on operation buttom in layout tab
Details: [Regression]Error on operation buttom in layout tab Setp: When I new a report design or template, it will be appear on preview state, but layout state.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/internal/ui/extension/EditorContributorManager.java
Assert.isNotNull( targetEditorId );
			boolean merged = false;
			if ( targetEditorId.equals( contributor.targetEditorId ) )
			{
				for ( Iterator itor = contributor.formPageList.iterator( ); itor.hasNext( ); )
				{
					FormPageDef incomingPage = (FormPageDef) itor.next( );
					FormPageDef exsitPage = getPage( incomingPage.id );
					if ( exsitPage == null )
					{
						formPageList.add( incomingPage );
						merged = true;
					}
					else
					{
						int index = formPageList.indexOf( exsitPage );
						formPageList.remove( exsitPage );
						formPageList.add( index, incomingPage );
					}
				}
			}
			return merged;
		}
		public FormPageDef getPage( int index )
		{
			return (FormPageDef) formPageList.get( index );
		}
		public FormPageDef getPage( String id )
		{
			for ( Iterator itor = formPageList.iterator( ); itor.hasNext( ); )