Michalfx

Hey, I wanted to play DZS v1.25 with my friend yesterday on the OA version. It worked perfectly for me but when ever he tried to play it , he would load the game on the loading screen this error poped up mpmisson\__CUR_MP.Takistan\mission_sqm/mission/groups/Item0/vechicles/Item0_vechicle: vechical class Citizen 1 no longer exists and then he would go back to the loading screen and it would start to load again but it would freeze at the begining and it would not move. Does anyone know how to fix this?