Hello, I was wondering if anyone can help me with this. Over the past couple of days, I've been trying to connect with a friend of mine to play zombies on Black Ops 1. But now for some reason when we try to send game invites to one another, I'll sit there and wait and then it comes up saying "game session is no longer available" and then it doesn't do anything. Was just curious is if this has happened to anyone else because we've always been able to connect just fine in the past and now we can't at all. If anyone has any tips for me, I'd greatly appreciate it!