I am at wits end. I have followed all the above info to try and get TOH to work with my Arma 2 , OA, Combined op, to no good end. I am using steam and TOH will now see the Arma directories, so I was wondering if maybe I should delete my arma (both Arma 2 and Arma2 OA) directory and maybe that would help with the registry so TOH would see the Arma files. Hope this makes sense. I just hate to delete all the files and find out that it did not work, as it did take time and work to get all the addons to works for Arma2 OA in the first place.