Thanks for all the advice guys! hopefully that patch can come out but we found a way for it to work and yes it is on ps3. If you guys have any problems before the patch try what we did.
Have one person in the online lobby and have everyone else you want to invite at the main menu screen where they show you your options of Spec Ops, Campaign, Multiplayer.
Thats what we did and it worked out for us so if you guys have any problems give that a shot and see if that works.
Hey another quick question how do you change the nat type? and what does that mean?