[gold stinger]

Screenshot is the standard Adobe AIR popup when you didn't unzip the program correctly or are running just the .exe from the zipped folder.

Make sure you're dragging the full folder out of the compressed zip folder properly, so that it has all of its contents correctly on a desktop or elsewhere so that it can run. The version of 'adobe AIR' is located in just that, the 'Adobe AIR' folder from where you downloaded, and running just the .exe or extracting just the .exe file will make it so that it can't find the adobe AIR folder.

Sorry for the non-quick response, this missed my radar since we usually look at bug reports & issues from the Discord channel for it nowadays.

TL;DR, clicking the program in the zipfile was always the wrong way to run the game. Your Windows 11 got rid of the natively installed Flash/Adobe AIR for you during the upgrade because it's an obsolete/unsupported app. Just pull everything out of the zip folder to fix.