I am having same issue, opened up log file and NO HELP whatsoever! I am so ticked off about this new upgrade! Why on earth would you "fix" a product that is not broken? All I can sit there and do is click: OK, OK, OK, OK... nothing! I have 200 GBS in a folder that really need syncing and it fails to work. Please help! Someone! P.S. Syncthing is not a good alternative, it has a really stupid time trying to sync 100s of GBs. I'm stuck with a broken everything at the moment and I can't stand it.