Light making weird stripes on sketchup model

Unity 4.6

So heres my problem, I made a map for my game in google sketchup when I brought it into unity it worked perfectly, but all the sudden the lighting is messed up in my game. my character (first person controller prefab) is holding a lantern, the lantern has a point light comming out of it, the problem is that the lantern light is making a really strange effect on the ground, any idea of fixing this, I've changed the intensity and stuff but it changes nothing. Heres a photo.

file:///C:/Users/User/Documents/screenshot%20for%20unity%20forum.PNG

 

You should probably upload the image you like to show us as a attachment or on a image hoster and then post the link here.

 

There you go, thanks

 

The one thing I can say is that with SketchUp models, I have sometimes had problems due to inverted normals (it doesn't pose a problem in SketchUp, but you can tell when the normals are reversed if the base model shading shows up as bluish instead of white)

I haven't had this particular problem with my SketchUp models in Unity, however, so I can't say if that has any relation to this...