I am having the SAME exact problem with mine. I am unable to run this from Arma 2 and have to instead run from OA. It gets as far as the title screen in OA, but the island is missing on the menue screen, and it refuses to get to the main menu at all in Arma 2. I am one of the biggest Stalker fans, and love Arma about as much. I just really would like to get some help with this problem as it is not only us 2 that have this unfortunate problem.
Also when running from Arma 2 it tells me the game needs to be on an older version. I have installed the mod first, then patch 1, 2 and then 3.
