I am sorry for the inconvenience.
That issue is most likely caused by Web Tools 2012.2 update
. Currently our extensions do not support this update. In our next release (next week) we will provide a solution. Meanwhile you can convert a standard MVC4 project to Telerik one (Telerik | Kendo UI for ASP.NET MVC | Convert to Kendo UI for ASP.NET MVC Application).
Another reason may be an incompatibility with Visual Studio 2012. We do not support any beta
version of the studio. The approach of converting MVC4 project to Telerik one will also work here.
Please let me know if that is not the case.
All the best,
the Telerik team
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