I am sorry to hear that you are experiencing troubles when using the RadControls in Visual Studio.
From what you have described it is not clear what is the exact problem that you have encountered. Can you give us some more details regarding the issue on your side? Can you specify what Visual Studio upgrade you have performed? A screenshot that demonstrates the issue would be helpful too.
I hope that we will be able to identify the reason for the problem and provide you with solution quick.
the Telerik team
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