So I tried to downgrade from 4.0 to 3.1.2 and I heard that you needed iTunes 8 so I downloaded the file from filehippo.com After the DL, I tried to run it but I got the error "the file 'i Tunes Library.itl' cannot be read because it was created by a newer version of iTunes" I looked around for a solution and it said to change the iTunes Library file to old and so son. I probably made a mistake, so I gave up. I uninstalled the iTunes 8 and went on apple to DL the latest iTunes version..but now the latest iTunes won't open!!!! I get the same error!! Please help Edit: I installed this version of iTunes http://support.apple.com/downloads/iTunes_8_1_1_for_Windows__64_bit_ I also have a 64 bit computer.