Slin I'm not sure I understand what do you mean by "lightmap using another uvset", I didn't change any settings related to the lightmap and I'm only using dynamic lights so there should be no lightmaps at all, if I understand correctly.
I'm assuming that a light map is a different name for what is known in 3dgs as shadow map. what is either an another texture layer containing lumel data or data structure holding a precomputed vertex lighting based on its distance from light source.
concering fixing the shader, I'm using the bundled shader that comes with 3dgs 8.03. I have uploaded the level after adjusting the light as recommened by Quadraxas to
http://www.box.net/shared/7caf7l02t1