Fixed bug where list with errors in the designer was only updated if the document failed to load completely.

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Xaml/XamlDesignContext.cs

@@ -86,7 +86,7 @@ namespace ICSharpCode.WpfDesign.Designer.Xaml
 			parserSettings.CreateInstanceCallback = this.Services.ExtensionManager.CreateInstanceWithCustomInstanceFactory;
 			parserSettings.ServiceProvider = this.Services;
 			_doc = XamlParser.Parse(xamlReader, parserSettings);
-			if(_doc==null)
+			
 			loadSettings.ReportErrors(xamlErrorService);
 			
 			_rootItem = _componentService.RegisterXamlComponentRecursive(_doc.RootElement);