2013 R1 deprecated the enum ArtOfTest.WebAii.Core.BrowserType. You are told to "Use Telerik.TestStudio.Shared.Communication.Enums.BrowserType instead." The problem is that the new DLL that contains the replacement enum is not added to the GAC by the 2013 R1 installer. If you add a reference to this DLL (required to use it as instructed) from Test Studio's Bin folder, but different people on the same team install Test Studio to different locations, the path to the reference will break causing compile errors. Can this DLL be added to the GAC by the installer in a future release?