Is there anything that can be done in the mean time? I lost all my sync folder locations in Linux sometime last week, and just now, after an OS X update that after it finished, logged in for a few seconds and then quit back to the login screen, I lost all my sync folder locations in OS X. I have dozens of sync locations and really consider btsync unusable until some fix is released. I tried also to downgrade to 2.3.2, 2.3.1, and 2.2.7 on both OS X and Linux without success.