Hello everyone

I've got a problem!

The other day I built a model in SketchUp and exported it as an .fbx file and then imported it into Maya 2016. And it was fine, no problems at all.

But today I've redesigned it a bit with a new SketchUp project and done a new and improved one. I exported it from SketchUp like I did before with my previous one and imported it into Maya but this time the mesh has black bits on it which shimmer when you tumble the camera around.

Anyone got any idea what I've done wrong..?

Many thanks in advance for any help!

Here's what I'm seeing: