evan250 10 Posted January 9, 2012 Hello, i am trying to update my Arma 2 OA to 1.60 using the latest update but it is stating that "ARMA 2 OA is not installed on your computer or installation is corrupted, But the thing is that i do have the game installed both arma 2 and Arma 2 oa and the update ARMA2 patch 1.11 installed fine without this error and i am stumped by why it is doing this can some one help me out. Share this post Link to post Share on other sites
.kju 3245 Posted January 9, 2012 It seems your registry is missing the entries. Probably only a full reinstall will work. Share this post Link to post Share on other sites
bigbud42012 1 Posted January 16, 2012 im having the same issue i have arma 2 free with arma oa i patched the arma 2 to 1.11 for city life and it wont let me patch arma oa to 1.60 it says wrong cd key any help is greatly thankful Share this post Link to post Share on other sites
