It's now 20 hours after launching KeeperRL on Steam. I would say it went pretty well for a first time! Though I'm definitely not happy with the number of crashes that you are experiencing. Hence a quick update, which fixes 3 different bugs.
There are still a few crashes that I can't get my hands on. With this update, the Windows version comes with a second launch option, called 'DEBUG'. You'll find it when you press the 'play' button in Steam. In this mode the game runs a little bit slower, but generates much more detailed crash reports. If you have a reasonably fast machine, then I kindly ask you to use that launch mode. Hopefully the bugs will be squashed soon, and you can all fully enjoy the game!
Have a nice day :)
Michał