I needed to restore the O/s on the PC using an image file backup (about 1 year old). When I connected the iPad I found that I could not launch iTunes because of this message: 'The file iTunes Library.itl cannot be read because it was created by a newer version of iTunes' I found a youtube video that suggested that I rename the file 'itunes library' to 'itunes library.itl' to cure this problem. I did this and then I found I could launch iTunes. However now the following message shows up: 'The iPad is synced with another iTunes library. Do you want to erase this iPad and sync with this iTunes library?' What the does it mean by "Do you want to erase this iPad..."? I certainly don't want the iPad to adjust itself to what's on PC of about a year ago, but rather the other way around.