Hi,

I am getting the following error message when trying to upgrade from 3.6.1 to 3.7.0. I tried multiple times without success.

===========================================================

An error occurred while running the wizard.

Error executing custom action Telerik.Blazor.VSX.Actions.MultiProjectUpdateMasterPageAction: System.InvalidOperationException: Sequence contains no matching element
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
   at Telerik.Blazor.VSX.Actions.AdvancedUpdateMasterPageAction.RetrieveMasterPageSettingsUpgradeInfo(IPropertyDataDictionary arguments, IProjectWrap project)
   at Telerik.Blazor.VSX.Actions.UpdateMasterPageAction.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments, IProjectWrap projectWrap)
   at Telerik.VSX.Actions.MultiProjectActionBase`1.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments)
   at Telerik.VSX.WizardEngine.ActionManager.ExecActions()

===========================================================

Thank you

Joe Walsh

After installing Telerik UI (for WPF and BLAZOR) - the Intellisense / Autocompleter stopped working in Visual Studio 2022 17.4.2

https://www.youtube.com/watch?v=6Fn5C726h4U

Enter and Tab no longer inserts the snippet. 

After uninstalling Telerik UI from Windows, the Intellisense / AutoCompleter started working again !

Error executing custom action Telerik.Blazor.VSX.Actions.UpdateMasterPageAction: System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Blazor.VSX.ProjectWrappers.ProjectWrap.<SetIsRootProject>b__30_0()
   at Telerik.VSX.Internal.VisualStudio.VisualStudioThreadHelper.<>c__DisplayClass1_0`1.<<RunInMainThread>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.Threading.JoinableTask.CompleteOnCurrentThread()
   at Microsoft.VisualStudio.Threading.JoinableTask`1.CompleteOnCurrentThread()
   at Telerik.VSX.Internal.VisualStudio.VisualStudioThreadHelper.RunInMainThread[T](Func`1 func)
   at Telerik.Blazor.VSX.ProjectWrappers.ProjectWrap..ctor(Project dteProject)
   at Telerik.Blazor.VSX.ProjectManagement.ProjectWrapFactory.<>c.<.cctor>b__5_0(Project p)
   at Telerik.VSX.Internal.ProjectManagement.ProjectWrapFactoryBase`1.GetForProjects(IList`1 projects)
   at Telerik.Blazor.VSX.Actions.UpdateMasterPageAction.GetProjectWrapsForSolution(IProjectWrap projectWrap)
   at Telerik.Blazor.VSX.Actions.UpdateMasterPageAction.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments, IProjectWrap projectWrap)
   at Telerik.VSX.WizardEngine.ActionManager.ExecActions()

Installation of trial Blazor UI broke Visual Studio 2022 extensions. Cannot create Telerik Blazor project. Cannot open VS Blazor projects.