Hello, I downloaded this today, and went to install it. The installer started ok, but very quickly came back with this error message : Installation cannot continue. Your registry does not show a valid FSX installation location. Then it closes, does not give me the option to direct it to my Steam location. I have Steam installed on a second hdd, and have had no issues installing or running any of the other games/sims on it. My specs are good for running this add on. Help please? Thank you, C W Chute