The issue you are describing is completely different than the one described in this forum thread. Please read more carefully the initial post and you will notice the difference.
From today's log you've sent me I've noticed the following:
[03/05 14:26:29,Telerik.TestStudio.Services.exe(3208:35),Error] OutstandingRequest.Run() : EXCEPTION! (see below)
Situation: Exception during HTTP Request, url [http://go.microsoft.com/fwlink/?LinkId=161376]
Outer Exception Type: System.ObjectDisposedException
Message: Cannot access a closed Stream.
HRESULT: 0x80131622 (Official ID (if app.) = COR_E_OBJECTDISPOSED, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5666)
at Telerik.TestStudio.Load.Http.OutstandingRequest.TransformContentForBindings(String strContentType, HttpResponseBuilder responseBuilder)
Please note this was a known issue which we fixed in our latest build. Please upgrade to the newest version of Test Studio and give it a try. If you are still experiencing the issue please submit a new support ticket with more details and logs included.
the Telerik team