Can anyone explain this?Thats the error a friend gets when he tried to load a map i made for him.We just flew one last night,same map,no problems.I didnt use anything we did not have in the first one.Im kinda stumped,Thanks

I've seen it a couple times when loading campaigns...it kicks me out to the main menu. Then I just reload the campaign and it loads the map up right. I have no idea about the cause or solution.

Just try and load it again.sometimes I get that too, say when I have just saved a mission and go to play. Actually I think I've had it happen to me in the QMB and Campaigns too. It usually works if you just try again.
Perhaps your case is something different however.