In my Prism WPF application I have (in design-time) the following error: "Resource is mising in "Telerik.Windows.Core.Design.AppThemeTip" component. You can see it in "Anap_of_Error.PNG" file attached. At run-time I have System.Windows.Markup.XamlParseException error with mesage: "Set connectionid threw an exception". You can se it in "ErrorSnapshotWhenRun.PNG" file attached. Why this errors have place? Please help to eliminate them.