Just upgraded to 0.30 due to DCON-210.

This fixes the problem with that issue, but now I am seeing a new problem. If I hit "force sync" for one of our larger projects it always fails with "Sync Failed: API Rate Limit Exceeded for <user-id> (403)".

See here: http://developer.github.com/v3/#rate-limiting

I'm going to contact them to request that my instance be white listed, but I think you need to look at the X-RateLimit-Limit and X-RateLimit-Limit-Remaining headers and throttle your requests appropriately.