# Dead3yez :
When running CO, I suspect that you only have to run CBA_OA. As OA is what contains all the base components there.
Hmm, thats not what I read on the BI forums when this CBA stuf was released. Well, I cant try so I have no idea whats true now
Maybe it depends on the addon you want to use? An Arma 2 addon requiring CBA while running CO might need both. While an OA addon while running CO might require only the OA version of CBA. I think thats the deal