Query Designer in VS 2010 causes Attempted to read or write protected memory. This is often an indication that other memory is corrupt

Question

I have a problem calling the query designer in visual studio 2010. My shared datasource points to an local SQL Server 2012 with an simple Test-Database containing one table. When i want to open the query designer i get the following problem:

After clicking the OK button the query designer opens in text edit mode, but i need the graphic mode for a presentation on monday. Already reinstalled Visual Studi 2010 but still getting this error. Can somebody please help?

Details of the message

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Object reference not set to an instance of an object. (Microsoft Visual Studio)

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Program Location:

   at Microsoft.ReportingServices.QueryDesigners.InternalQueryDesignerWrapper.InitializeDesigner()
   at Microsoft.ReportingServices.QueryDesigners.InternalQueryDesignerWithGenericModeWrapper.Initialize()