I have this game installed via the GameStop PC appication. It was broken when I updated to windows 10 from 8.1 Pro. The same situation on a clean install of windows 10 . When I downloaded the game on Gamestop it could not activate it and opened a file editor. This does not sound like it would require major resources to fix it. The funny thing is that Gal Civ II Dread Lords works with no activation issue. I appreciate any help that can be provided on this issue from knowledgeable sources.