Bondue

Okay here is my issue I am Installing ARMA 2 and ARMA 2: OA from steam, the base ARMA 2 game works just fine but when i try to load the ARMA 2: OA i get the errors in the included images. Can anyone please tell me how to fix this? ---------- Post added at 12:54 ---------- Previous post was at 12:53 ----------