Turns out one of the devs is checking in a lot of images (145meg), and is getting 'RPC failed'
It sounds like the same issue mentioned here: http://stackoverflow.com/questions/12651749/git-push-fails-rpc-failed-result-22-http-code-411
The solution is to change the limit within your local repository
git config http.postBuffer bytes
I'm running the stand alone version, where can this be set?