Sync problem

I had this problem recently when my battery died and I've had it in the past.  What you need to do is connect your mobile device, know the name of your device, disconnect the device, press file and go down to mobile devices selecting the one you want to not make a guest, finally you hit file again go down to delete partnership and go through the few pages accepting what it says and you should be all set.  Hope this fixes it.

Curtis