I have my organization GitHub account linked through the DVCS plugin. I see all of my repositories in the list but two of them (interestingly it's the two that I need) cannot be "enabled" for smart commits. If I check the box for enabled next to them, I get a red error icon and a message "Unable to link selected repository. Please contact the server administrator."
These repositories were previously linked and working fine. I noticed the commits not coming through as fast so I disabled the repositories and have been unable to re-enable ever since.