I have had the same problem.I recently purchased ArmA: CO from Steam for the direct purpose of playing this mod. I have watched countless videos and read many guides on how to install both of the ArmA games and Dayz; therefore I am confident that it has installed correctly. We need to alert the developers if we want it to be fixed. I submitted a ticket and emailed an the site and I suggest that I others do the same. If they don't know, they can't help. Sorry for the bad english. ZOLO- ZEDS ONLY LIFE ONCE!!!!