If you elaborate on what part doesn't work, I'll try to look into it.

well seems some people are saying it doesnt remove the shadows or something. all it does with me is sometimes not take the shadows away unless i switch weapons and switch back. im not sure about the shadow thing for others. ive never encountered shadows not going away all together

i dont see any shadows at all

This seems to not be deleting shadows casted by lamps or flashlights, only those created by map ambient lighting.