"player left a small crater"

[legacy-ws330]

If I create a big square room, put a player start on the bottom, and try and run the map (with sunlight, regular lights, no lights whatever), why do I get a "player left a small crater" death instantly every single time?

I'm guessing its related to the large scale of the room...what needs to be done to get rid of this problem? Thanks for any help-

[DGUnreal]

Go to the Editor side view and see if your playerstart is below the red line.
That's the instant KillZ line.
If so, move your room up and rebuild.

[Angel_Mapper]

Press Rebuild All.

[legacy-ws330]

Thanks for the help!

[legacy-SivakDrac]

Press Rebuild All.

Yeah. If you don't rebuild the geometry and you make changes to it, your player will "fall out of the level" and gameplay will be at an all time not fun experience.