Attempt to build freedoom wad with finished map...

I'm trying to build freedoom wad with finished maps based on Ultimate Free Doom. I tested it in prboom: all works nice, but some monsters doesn't spawn. (chaingunner, revenant, spider, etc...)

Can someone explain what am I doing wrong?

WAD and build configs:
http://dl.getdropbox.com/u/1400234/prboom.zip

Ultimate Freedoom is Ultimate Doom compatible. Ultimate Doom doesnt have those monsters or SSG.

Just load up your map with regular Freedoom. Should work fine.

I changed freedoom build config to merge Ultimate freedoom content with freedoom 2. So I go SSG in ultimate doom, but doom2 monster doesn't spawn, despite the fact that all the sprites of the monsters found in resulting WAD. Maybe I made a mess of something in the config file?..

The engine itself prevents it, you'll have to modify prboom in order to get what you want. (Although you might have noticed, you can have a Super Shotgun in Doom 1, although I don't think you can normally switch to it...)