Weird Glitch!!!

[Imperator]

Every time I start a level I immediately fall through (Even the lit floor). The only way to begin a level is to exit all the way to the main menu and then "continue" game. When the game continues it acts as it should.

It annoying to have to constantly exit to the main menu!

[sitontheedge]

I have this worse, because I can't figure out any way to make the falling through the floor stop. Exiting to the menu doesn't seem to help in my case.

Some assistance would be greatly appreciated.

[Patnique]

Same...