We are evaluation Telerik Test Studio as a possible replacement to the Microsoft testing tools. However, I noticed that you install the Newtonsoft.Json.dll in the GAC. We also use that particular dll in the products we develop and having Telerik Test Studio installed causes our products not to run -- getting a runtime binder exception on the Newtwonsoft.Json.dll. Why are you installing this dll in the GAC? This is a common, opensource dll that should not be placed in the global assembly cache. This is a deal breaker for us, so I'm hoping you have an alternative.