I am having a problem with the new Annihilation Map pack. For some reason when I try to play Zombies on Live, The game will load fully but then stops and does not allow me to play!? I have contacted support and they seem to have no idea what is causing my problem and said that I should hear back from someone within 3 business days. Is anyone else having this problem and if so have you been able to correct it?? They had me delete and re-download but that did not work!!