Map mishaps

[Checkmate]

I posted this in the Mods forum this morning, but it occurred to me that I might get a better response here.

I downloaded three of the maps at http://www.frpmods.com/maps2.html and installed them on my Win2K PC, following the instructions in the readme files. I tried out each one in the Danger Room.

The Sunken City map works beautifully.

The Sewer Tunnels map looks great, but my hero materializes with his legs embedded in the floor up to his knees. He can't move or respond to any commands, and the villain just wanders around and ignores him.

The Star Trek Enterprise Bridge just gives me a lot of objects suspended in a black space with no walls, floors, or ceilings. The hero materializes upside-down, and won't respond to any commands. The villain is nowhere to be seen.

Any advice?