Protocol error exception


Hi guys
One of our testers found your project and thought it was just what she needed. So I downloaded the zip, built and tried it against our TFS 2013 server. But on Connect it collapsed in TfsContext.cs on this line, with a protocol error:
                var service = tfs.GetService<VersionControlServer>();
I see that this project is not enormously active, and I wonder if it was mostly "demo". Which version of TFS have you been talking to? I have checked my server Uri by pasting into IE and that takes me to the server web page and shows me the collections. Could there be something obvious I have forgotten?
Pete Story
Kongsberg Maritime AS, Norway