1.0.8 - game worked fine. 1.0.9 - game crashes when I hit "Start Game" (no dump). My plan for Christmas day was to play Dungeons of Dredmor most of today, so I'm rather upset.
Okay solved it - apparently 1.0.8->1.0.9 made the config.xml invalid somehow. I deleted it and now it runs. I had noticed it reset my settings when I launched it earlier, but I figured that was just a normal side-effect of patching. Anywho, it's still a problem, moreso to just let the word be known so people don't have broken games..