I have a iPhone 4 running 4.0.2. Yesterday I upgraded to iTunes 10 (on Windows 7 64 bit) and everything seemed to work fine. I was able to connected my iPhone and sync it etc... This evening I connected my iPhone and did another sync. I got some weird error message (can't remember what it said) but it continued to sync. I decided to eject the iPhone and reconnect it. Now in iTunes I get the "Set Up Your iPhone" screen that you would get if you connect a new iPhone that it hasn't seen before. So I guess iTunes for some reason thinks I have a new iPhone which I do not. It is giving me the option to "Set up as a new iPhone" or to "Restore from a backup" and it lists my previous backups. I would rather not do either. Is there something I can do to get around this? Under Preferences --> Devices in iTunes I reset my sync history but that didn't help any. Has anyone seen this behavior before? Any ideas?