iTunes is telling me to restore my iPad to factory settings?

I just updated iTunes today. I tried syncing my iPad2 (32GB) and I was told that iTunes does not recognize my iPad and that it needs to be restored to factory settings. I've tried plugging it in with the cable and syncing it wirelessly and it's not working. I've turned it on and off again and restarted it and tried different USB ports and nothings working. It does sync with my iPhone, but no luck with the iPad. Please, help, I would hate to lose everything on my iPad. When I tried plugging in my iPad to my computer, the camera roll did show up on autoplay (windows vista) so it does recognize my iPad. Thanks in advance for any help.