I installed DCS world and my modules (A10, BS2) without a problem and they both activated automaticlly. I guess they saw my SN from the stand alone games still installed. The only problem I have is that I can't easily quit. When I push ESC and the quit menu pops up, it freezes and I can't choose {Quit Mission}. I have to do the three finger salute, select task manager then the quit menu becomes active and I can choose quit.