I have a CC for Teams account and am running OSX Mavericks. I go to Preferences in the CC Desktop app and turn on file sync. Then when I go to the Assets tab and click "Start Syncing," for a split second the folder with the CC icon shows, then the "Sart Syncing" button immediately comes back. When I click on it a second time, I get the blue wheel. After a minute or two, it times out, and the "Start Syncing" button comes back. Meanwhile, the turn file sync on button in preferences appears to not stay checked.