Bug 131484 Can't not add item by click the item from palette
Details: Can't not add item Setp: 1.New a report design and open the palette. 2.Click the lable icon. 3.Move the mouse to layout and click again to add the label. Actual result: Nothing is added in layout.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
for ( Iterator iter = formPageList.iterator( ); iter.hasNext( ); )
		{
			FormPageDef pagedef = (FormPageDef) iter.next( );
			try
			{
				addPage( pagedef.createPage( ), pagedef.displayName );
			}
			catch ( Exception e )
			{
				error = true;
			}
		}
		if ( error )
		{
			setActivePage( "BIRT.XMLSourceFormPage" ); 
		}
	}
	/**
	 * Add a IReportEditorPage to multipage editor.
	 * 
	 * @param page
	 * @param title
	 * @return
	 * @throws PartInitException
	 */
	public int addPage( IReportEditorPage page, String title )
			throws PartInitException
	{
		int index = super.addPage( page );
		if ( title != null )