VS2012 intellisense not working with Telerik Ajax Controls

[Bob]

I have a problem with intellisense not working in the code behind for my web project.  I have uninstalled and reinstalled both Visual Studio (2012 Premium) and Telerik packages.  The activity log (/Users/{MyProfile}/AppData/Roaming/Microsoft/VisualStudio/11.0/ActivityLog.xml) shows this error:

CreateInstance failed for package [Telerik.Web.UI.VSPackage.VSPackage {plus version information}]

I have a feeling this is the cause of intellisense not working.

I'm working on a Windows 7 x64 platform with 8G of RAM.

Any help would be greatly appreciated.

[Teodor]

Hello,

 I think the error is not related to InstelliSense. The log shows the Telerik VSExtensions (responsible for the Telerik Project Wizards) crashing. To fix it I recommend fully cleaning Visual Studio 2012 of the extensions before reinstalling them:

1. Uninstall all Telerik extensions from Visual Studio 2012 | Tools | Extensions and Updates
2. Ensure all Visual Studio instances are closed.
3. Delete all direct subfolders of C:\Users\[username]\AppData\Local\Microsoft\VisualStudio\11.0\Extensions\ containing Telerik.*.dll assemblies.
4. Reinstall them fron Extensions and Updates menu.

IntelliSense not working with Visual Studio 2012 is a known issue. The following article suggests how to fix it (use asp:ScriptManager instead of telerik:RadScriptManager):
http://www.telerik.com/help/aspnet-ajax/introduction-jquery-intellisense.html

Let me know If you need further assistance.

All the best,
Teodor
the Telerik team