Hello Chris,

      I did had this same exact problem with my Captainsim 757. The only solution is to uninstall your Captainsim 757. You must go to my computer, C: drive, Program files then microsoft games. If using flight simulator X then you click on the "Microsoft Flight Simulator X" folder. Delete anything that has to do with captainsim. All Captainsim folders must be DELETED. Then restart your computer and try reinstalling your product. If that doesnt work then there is not much I could say. Hope it help.

Dominicana1930