I've booted up the game and reset it to default settings, assuming it could maybe have been something in my settings that was corrupted. It still crashed.

So I decided I'd spent a couple of hours completely reinstalling the game, and after the ~4 hours of download/patching, it's still crashing. So at this point I genuinely don't know what to do and am awaiting a GM to teleport me out of the ward to see if that'll solve anything. No idea how to contact them other than these forums, so I'll just keep an eye on this thread hoping it'll be read soon.