Is "Display Settings->Scale" is not 100%, then the game does not display
With the latest update: if the Windows display settings are not 100%, then the game is masked so you can only see the top left rectangle.
Example, set scale to 200%, and you see the top left quarter (so 3/4 of the screen is masked out, including the "exit" button. Game then crashes and needs a reboot.
Setting scale to 100% works, but renders everything else tricky to read (including the OS itself, and in-game stuff, as we have adjusted the in-game scaling as well) but at least the game is playing.
Thanks for the suggestion. It failed, but it got me playing more with settings. While if did work "full screen" it then went wrong in Windowed mode again.
A bit of a fight to fix (due to not being able to see the options).
By making the display resolution smaller (setting in Sims - telling it the screen was 25% of what it was) I could see all the options. Then turned on "OS Scaling" (which we had on previously - it got turned off in the update), restarted the app. It prompted "Turn off autoscaling as it's too large" which disabled it for that run only. I could then access the display menu again, set back to the correct resolution, restarted the app and this time the autoscaling remained.
So all working - it can tell when the screen resolution is too large, so a shame it doesn't spot when too small.
Thanks again - we got there! Hope this helps someone else.