Unable to commit to Subversion

Question

I have a client who had to rebuild his automated build server. He checked out his project folder from my subversion server but is now no longer able to commit - he gets this err

Answer 1

I had the same error code, but the error turned out to be caused the CNTLM proxy which I had recently installed on my local machine.
To resolve the issue I had to add an additional domain suffix to the proxy bypass exception list, in order to be able to commit to the team svn server hosted onsite.