Have you checked the normals, some times stuff imported from other modelling packages have have issues with maya. try importing one of the free models on this site..........dave

I think the box is getting the light but you are rendering at the wrong angle to see it(put a little bevel on it and see). I think you have a problem with the beetle and the cube thing, check the...

The mesh on the beetle is getting some strange highlight, try creating a box and bevel the edges and assign the shader to it. I think there is some thing wrong with those meshes...........dave
...

Have you done any light linking?................dave

Have you add the meshes that are not getting the light to your render pass layer.........dave