I have: http://windows.github.com/
My current project has around 20k files, around 150MB (and not speaking about how slow it is and I cannot do a thing now) it doesn\'t
Im using Githug for Windows (7) and faced the same problem. While using PowerShell I realized that I didn't fill Full Name and email address in tools > options. Look like a beginner mistake (and I am!).
tools > options
hope it helps!