Bug 210609 [Smoke]Crosstab is failed to preview in runtime
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/extension/ExtensionPointManager.java
else if ( IExtensionConstants.ELEMENT_PROPERTYEDIT.equals( elementName ) )
		{
			loadClass( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_CLASS,
					IExtensionConstants.ELEMENT_PROPERTYEDIT );
		}
		else if ( IExtensionConstants.ELEMENT_PALETTE.equals( elementName ) )
		{
			loadIconAttribute( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_KEY_PALETTE_ICON,
					false );
			loadStringAttribute( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_PALETTE_CATEGORY );
			loadStringAttribute( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_PALETTE_CATEGORY_DISPLAYNAME );
		}
		else if ( IExtensionConstants.ELEMENT_EDITOR.equals( elementName ) )
		{
			loadBooleanAttribute( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_EDITOR_SHOW_IN_DESIGNER );
			loadBooleanAttribute( newPoint,
					element,
					IExtensionConstants.ATTRIBUTE_EDITOR_SHOW_IN_MASTERPAGE );
			loadBooleanAttribute( newPoint,
					element,