RadControls for ASP.NET AJAX upgrade wizard error

[Trinity]

I keep getting this error when trying to upgrade my project using VS 2010 Ultimate:
Failed to execute command.

System.Runtime.InteropServices.COMException (0x80004005): Unspecified error (Exception from HRESULT: 0x80004005 (E_FAIL))
   at EnvDTE._DTE.get_ActiveSolutionProjects()
   at Telerik.VSX.Internal.ProjectManagement.ProjectRetriever.GetFirstSelectedProject(DTE dte)
   at Telerik.VSX.Internal.ProjectManagement.ProjectRetriever.GetFirstSelectedProject(IServiceProvider serviceProvider)
   at Telerik.VSX.Internal.ProjectManagement.ProjectWrapFactoryBase`1.GetForFirstSelectedProject(IServiceProvider serviceProvider)
   at Telerik.Web.UI.VSX.ProjectConfigurators.ProjectConfigurationStyles.ProjectUpgrade(IServiceProvider serviceProvider)
   at Telerik.Web.UI.VSX.ProjectConfigurators.StreamlinedProjectConfiguration.StartUpgradeWizard()
   at Telerik.Web.UI.VSPackage.CommandExecutor.Execute(UInt32 commandId)
   at Telerik.VSX.VSPackage.PackageBase.CommandCallback(Object sender, EventArgs e)

I have downloaded the latest version of the controls via the control panel and restarted VS multiple times but I still get the same error. I have gone through the forum and tried everything that users have reported but still continue to get this error. Any help would be appreciated.

[Vesko]

Hello Trinity,

I am sorry for the inconvenience.

Could you confirm that you have the Solution Explorer opened? If not - open it (View | Solution Explorer), restart Visual Studio and give the upgrade another try.

Let me know if that helps.

Regards,
Vesko
Telerik