Jerryscan

This started yesterday after i bought BAF and the PMC dlc. Everytime i join a server it freezes for a second and It says "arma 2 has stopped working" The game works fine on normal Arma 2 and Arma 2 Operation Arrowhead. PC SPECS EVGA GeForce GTX 670 Intel Core i7-3770 CPU @ 3.40GHZ 3.40GHZ 8,00 GB Ram EDIT: Yes i have reinstalled my drivers