This weekend I upgraded to Windows 11 (from 10) and after the first tentative TSC run, I was pleasantly surprised to find it marginally improved my framerate and a self-made scenario that I'd abandoned a while back due to persistent crashes suddenly works without issue. So that's all good. Unfortunately, that was yesterday. Today, I can't even get the game to load, about 3 sec after the initial startup popup screen, I get the following fatal crash: Is this something anyone has encountered before and is there a straightforward fix please? I haven't touched anything related to TSC today, the only thing my PC has run since yesterday (other than normal system/background stuff) is Cities:Skylines and Google Chrome. Many thanks SB