okay so i bought H.A.W.X today. i was thrilled that there was co-op. i love co-op. but when i tried to register my cd key it said that it was invalid!!!!! bullcrap!!!! i read it off the instruction manual!!!! has anyone else have this problem? if so and you solved it; tell me how to fix it thanks!!! :thumbsup:

Open a support ticket with Ubisoft, or try to register it as a steam game.