First off, like Olejniczak said, Welocome everybody!
Second, let's get to the point.
Actually this bug is actually because of my fault (that's what at least I think).
Anyway, when I get to the mortuary, defeat everyone, pickup the Angelic Armor, the game crashes. I don't remember wheter it happens when I pick it up, or check my inventory.
The funny thing is, that the game works fine on my WinXP 32-bit on 32-bit computer.
But the game on WinXP 32-bit BUT 64-bit computer.
I don't know wheter this should be considered a bug, but if you have a same configuration as me (yeah, I only had original 32-bit version), don't pick up the Angelic Armor or your progress will be lost. Take care.
EDIT:
A funny thing just happened. I just started DoomRL and I was able to "Continue Game". And I can see the Angelic Armor. I just put it on. Strange (I remember saving the game somewhere around level 11 of Phobos Base, now I am on level 7 of Phobos HELL). And I see the special exit to Mortuary :D