Whats up guys. I have a problem. I made a room and put some crates in it, then put one light on the ceiling to illuminate the whole room. But when I run the game, the only thing that is illuminated are the crates and everything else (the walls, floor and ceiling) is pitch black. Help.

Hmmmm.
Depends on what kind of light You used...
If it was a spot light, ore Dynamic light
make sure it starts on, and has a brightness more than zero.
if its a standard light, it should work right off the bat.
but it might be too far from the floor & wall to light em Up too.

Dunno bro. Hope that helps.
Good luck

this happens when there is a leak in the map. check the compile log.

Well I figured out what the problem was! For some reason when I put a light prop in my map, like a lamp for the light to come out of, the actual light entity doesn't work! Strange! But thanks for the answers.