On a UK Windows 7 Ultmate edition machine. I've literally just started ADOM Steam Deluxe up after transferring over all my P60+ save files to the new save directory. They appeared in the directory fine, and in the 'Restore game' menu option, so I decided to continue my main save game. When I loaded the game I gained about eight Steam achievements at once (it was a level 26 character in the deeper levels of the CoC). I clicked the first one and it spawned an error message, the screen went blank, and I was taken to the NotEYE error dialogue.

Several attempts to retry later led to a return to the error dialogue each time. I eventually tried to continue in 'safe mode', only to have the achievement I'd accepted still on-screen in ASCII instead.

I exited it with 'z' but any keystroke from me following that brought the same original achievement dialogue back again. Even 'S'aving the game was impossible. I tabbed out about fifty seconds ago to write this up and it finally crashed to desktop forty seconds later.

I know there're lots of bug reports about crashes in general but this is the first I remember seeing a crash because too many achievements were gained at once or because they were gained via importing.
Priority 4 chosen because I was able to restart ADOM and reload the same game without the achievement spam showing up again. It's still something that'll really put people off, though, and may cause greater issues if they end up losing the save.