I have scripts using transport vehicles cargo space for store/unstore cargo objects on them, and during MP game we observe crashes of client machines when we use unload option on vehicle controlled by other player from outside, the crash is happen on activator of action and on the owner vehicle too. The scripts using standard command for unload like:

objNull setVehicleCargo _object;

During the crash we receiving acces violation errors.

On SP and when owner of vehicle is the same person who using unload command on MP all works fine.