I've been working on making my first zombie map for over a week now. I've had a few problems constructing a simple three-room map with only a few wall guns. I've managed to fix all those bugs through either research or experimenting. I have a glitch that appeared several times throughout my making of the map. It has to deal with the color scheme.
My third room's exterior wall is basically entirely black. Pitch black. I have moved, changed the intensity, added reflection_probes, deleted, ect. on the lights but to no avail. The wall has a sliver of color at the very top and is the only area affected. I do not have this problem on any other part of my map.
The wall is made of about 5-6 divided parts so the individual wall probably isn't the issue. I've also tried messing with the worldspawn KSP to try and fixing it. It seemed to pose no effect. I altered several light angles that were nearby. Still no fix. I temporarily removed skyboxes to see if that were the issue. Not at all.
I can't seem to find the cause for this and was wondering if anyone could help me? I'm pretty new to all this stuff and its hard to find good tutorials on developing maps. I've had the bug for about 3-4 days of construction and experimenting but am hoping for help on these forums. Any help would be appreciated.

Here are some pictures of the problem too:
https://www.dropbox.com/sh/y9f9zzqsbt4zldc/IdfUuTGfs-

edited on Feb. 1, 2014 10:16 pm by AngelofGallifrey

Are you making the light a primary light?

It looks like your wall is outside, so the sun may be hitting it too, which is also a primary light. You can't have two primary lights affect one surface.

How would I make one a primary light and vice/versa? I'm really new to this and no tutorials (that I've found) exactly explain on how to use lighting outside of the building.

When you have the light selected, press N to bring up Entity Window. Are any of the checkboxes that have "Primary" in it checked? If so, with your current geo you'll want to uncheck them.

Thanks for the help but all my current lights do not have the primary checkboxes marked. It must be something else?