OK, this is actually my first DoomRL 0.9.9 game and... it crashed. D'oh.
I'll try to reconstruct what exactly happened:
1) Before I ran 0.9.9 the first time, I set up Malek's Doom 3 sound pack first.
2) Played the game, everything went fine.
3) Found an Assault Shotgun and a Jackhammer, and I saw someone reported a similar bug with the Blaster; So purely informative: I found a Blaster too.
4) Decided to continue later this day, so I saved.
5) Later this day, continued my game, but oddly if I fired my shotguns, they made that sound you get if you pick up a full armor in Doom 3 (I dunno exactly what it is technically, ask Malek). I think there were also some other wrong sound bindings.
6) Saved, restarted the game, but same result.
7) Saved again, this time I tried switching to the original sound pack.
8) Continued my game, and finally when I was about to give my first buckshot to a revenant... *CRASH*. The screen I got is attached to this post.