How do i do a hole in the floor to put a way down?

[LulleBulle]

Every time I try to make a hole in the floor and put those kind of doors which I've forgot what they're called so you can go down i always get floor that covers the way when you open it, even tho i put floor around it and not through it in level editor. Anyone who can help me with that?

[SilentStriker]

Try delete your map_cache

[PythonBlue]

What SilentStriker said. I was working on a direct mod of the main storyline and, since each map has a cache file as well, I found that removing them was the only way I could see my changes relating to static objects and such in-game.