i have a weird problem. i applied these light shaders to a surface and cloned them to make a series of lights. i compiled and started JO. on one half of the room, the lights look fine, but on the other half, there is this black box around the shader. it is a 2d box, and it's not a brush. i don't think it has to do with my gfx card (i'm running a geforce 2), as i have no problems during singleplayer games, and the other shaders work. any ideas?