I am unable to launch the Windows App Certification Kit to test my Windows Phone 8.1 app on the same machine I use to develop the app (running Windows 8.1 and VS 2013 Ultimate Update 4). The error message I get is:
The UI workflow of Windows App Certification Kit is not supported on this OS version.
I have tried to launch the kit via the command line (with administrator privileges) and via Visual Studio, but I get the same error.