i'll repeat for this page.
can you turn off light emmiting textures? if so how?
By using the texture instead of the shader. Sometimes the shader has the same name as the texture:
you won't be able to select the texture in radiant and the engine will use the shader anyway.
The clean and simple solution is to create a new subdirectory
yourmapname in textures/ and copy the textures you use there. Use your own shader file and name your shaders like
yourmapname/shadername.
This will usually stop other maps from messing with your textures, and you from messing with
other maps shaders.
Note for the casual reader:
A shader is a script that can use textures (jpeg images, ....) and do interesting things with it
like make it a ladder, nonsolid, or make it emit light.
Use light emiting shaders, seriously. Only add point lights where you want to touch up the lighting.