Haha okay, fair enough. I hope that they fix those bugs soon (and thanks for your quick response!).
In case anyone is curious, I managed to bypass this particular problem by extracting the mission from the PBO and editing initPlayerLocal.sqf by removing the following lines:
player unassignItem "ItemMap";
player removeItem "ItemMap";
player unassignItem "ItemCompass";
player removeItem "ItemCompass";
player unassignItem "itemGPS";
player removeItem "itemGPS";
Although I thought this might spawn everyone with a map, it instead spawns the team leader with a GPS. It takes some of the excitement out of it because you know from the beginning where to go, but at least it makes it possible to complete the mission (you still start with no weapons, don't worry).