I'm trying to get to iOS7 but wanted a good backup first... Made the mistake of downloading/installing newest iTunes beta first and now I cannot get iTunes to backup my phone Been Googling since last night and have tried every combination of deleting files from different library folders then the trash, uninstalling iTunes, restarting everything, even tried re-installing latest non-Beta iTunes and still get frakking "iTunes was unable to load data class from Sync Services. Reconnect or try again later". I am ready to throw my MB at the wall! I have never had this much trouble with Apple, that was why I switched in the first place! Any new suggestions??