Something seems to have happened and with the most recent (downloaded) version; the level frequently fais to load, forcing a quit. Alt+f4 works so it's not completely crashed
Yeah, this happens if you play one run, then play a run as Stan. I made a mistake with adding the new map for Stan. A fix will be uploaded in a few hours.
For now, closing and reopening the game will fix it with no penalty. Sorry about that!