downeast47: Think i got the missing file problem fixed but am now being told that my computer does not meet the min requirements. The computer is about 3 years old and came with WIN 8 installed on it. Trouble is if you buy the latestest with win 10, a lot of the older games will not work. Oh well looks like my recent purchase from GOG was another example of throwing my hard earned money out the window.
I'm on a relatively newly built Win10 rig and haven't had any issues playing any of my GOG games so far - older or newer.
Again more info would be useful to perhaps get you up and running: system specs, error messages, what you've tried, how you've installed your games (did you install as admin, did you run in compatibility mode, are you using Galaxy, etc.)?