[Fortress Italy crashes on startup]

I have a good PC on Win 10 and run all other CM titles no problem. I bought the title on 31 October 2020 and activated it today OK. It would go no further though abs crashed before the main menu.

[Fotress Italy crashes on startup]

I purchased the full Fortress Italy bundle including Road to Rome yesterday, 31 October 2020. I have activated it twice (once by accident) but it still crashes without going into the main menu after activation. I have all the other CM titles that work ok.