You can use the attached Patch file (in the Telerik.Web.UI_2010_1_309_Hotfix.zip archive) to fix the problem too. Please, close all Visual Studio instances first.
This fix is already applied in the Q1 2010 SP1
release. You can download it from the downloads section
of your Telerik account.
An error in the Q1 2010 release was identified recently.
When starting the Visual Studio IDE you get a screen with an unhandled exception in the Telerik.VSX.AssemblyDiscovery.AssemblyLister.Init method.
The problem goes away after a Visual Studio restart.
- Close all the Visual Studio instances
- Download the attached archive and extract its content to the [RadControlsInstallFolder]\VSExtensions
- If you have Visual Studio 2010 installed, extract the archive content to the [VisualStudio2010InstallDir]\Common7\IDE\Extensions\Telerik\Telerik.Web.UI.VSPackage\2010.1.309 folder as well.
- Start Visual Studio again