After installing the latest update (version 220.127.116.115), I experienced even more crashes, hangs, and sync errors than usual. In fact, before the update, FTM for Mac 2 was behaving pretty well; now it's worse than it ever was. I just restored 18.104.22.1689 from a backup. I recommend that, if you haven't already installed the update--don't. If you have, hopefully you kept a backup of the previous version, in case you need to restore it.