SVN Error when connecting from MacBook
I lost a few too many hours working through this issue and trawling forums for an answer.
Just in case anybody else is facing this issue, I found a workable solution in this forum post: Super User - SVN Connection Not Successful.
In summary, uninstall the Cisco Any Connect web security module. This approach worked for me with Cisco Any Connect Client 3.1.x for Apple Mac OS X 10.9.x