I seem to have the same problem. Have been editing a mission with already in-game vehicles, didn't change anything and updated the game and now, opening the mission in the editor or multiplayer causes that same error.
For fun i created a new mission and added all the vehicles in the game, and there was no error. Guess they have updated something with the vehicles that causes problems with vehicles that have been added before or something..Idk
Heard other people have the same problem, so if someone have an opinon on this matter, it would nice to hear:P
Have also been having problems with no sound on the M4 FHQ addon after the patch but i guess thats another thread..
