Same as Ticket #25100, which was closed automatically without any response. I can't register my web store bought copy of DCS: Huey on Steam, I am using the correct serial key, the one you can access through the module manager on the standalone version of DCS: World, or through the "Get Serial Key" option on the store website. I am lead to believe that if I insert that key into Steam I should get something other than an "invalid key" error message, and I would really like to remove the redundant install of DCS: World.