I can repeatably crash the game by bashing a powder keg in a specific location.
I was trying to do something stupid, but I was just experimenting, honest.
I placed the keg in front of the cracked wall in the apartment next to Wendy's place. Then I hit it with my cudgel. At point blank range. I see an explosion, then the game disappears and I get a 'quit unexpectedly' message.
If I move the keg far away and try the same thing, it works correctly. I die, of course, but the game doesn't crash.
Also, if I move a few steps away and throw an axe at it, it works correctly.
I'm running version 1.04 on Mac OS 10.6.4 on a 15 MacBook Pro from mid 2009.
I attached a screenshot, and I can provide a saved game if you need one.
Also, I see talk of version 1.05 and 1.06, but I don't see how to upgrade. There aren't any options in the game, and the downloads page only has 1.04 for the full version of the game.