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/FormPageDef.java
{
			return Boolean.valueOf( value ).booleanValue( );
		}
		return false;
	}
	private Object loadClass( IConfigurationElement element,
			String attributeName )
	{
		Object clazz = null;
		try
		{
			clazz = element.createExecutableExtension( attributeName );
		}
		catch ( CoreException e )
		{
			ExceptionHandler.handle( e );
		}
		return clazz;
	}
	public IReportEditorPage createPage( )
	{
		Object def = loadClass( element, ATTRIBUTE_CLASS );
		if ( def instanceof IReportEditorPage )
		{
			return (IReportEditorPage) def;
		}
		return null;
	}
}