Hi, I posted this same bug in the Steam forums about my game crashing every time I unlock Dracul.
"I'm not sure if anyone else has come across this bug but everytime I find Dracul to unlock him, whether I beat that current dungeon or I just retire, the game becomes unresponsive. Just a black screen with the music playing. That is the Steam version, if I play on desktopdungeons.net, I can continue to play the game, but it refuses to save after that point. Either way I get screwed." - What I mentioned on the Steam forums.
A little added info:
- Problem persists across multiple computers.
- I actually have to kill "myself" in that sub dungeon for the bug to happen. If I leave right away before moving the game continues to work fine.
Honestly if the best approach is to try uninstalling and re-installing Desktop Dungeons, then I'm willing to try because the game is just that good. I don't mind starting over