I've been making a map, and when i compiled and tested it it looked like this

But if i moved the cursor a little bit it looked like this

What is wrong?

EDIT: I tried placing other lights, than the lab on the other side, without luck.

You're not accidentally using the vertex-lit textures by chance, are you? Those have caused lighting problems for many mappers.

synthemesc wrote:
You're not accidentally using the vertex-lit textures by chance, are you? Those have caused lighting problems for many mappers.

You are right! And i didn't see that! Thank you very much!