[Zubersoft]

If you drag down from the top of the screen and press the back arrow in the application title bar, that should prompt you to cancel/stop the sync. If this is not working for some reason, let me know. If the application is truly frozen, then no element in the UI would respond to anything, so adding a cancel/abort button wouldn't help either. Or are you saying just that the sync never finishes and seems to be stuck?

Mike