Hi, I'm new here and i'm not sure if there was already a thread about this but I just got my iphone and i was able to manually manage it on my pc and mbp. But today, i had to reinstall my itunes because it kept crashing and now i can't manually click manage on both computers. I can only do it on one of them and when i try to do it on the other one, it asks to erase and sync. I'm not sure what i'm doing wrong or if i'm missing something. Help would be nice. Thanks.