Rendered view doesn't match model

Hey folks,

I'm trying to render something, and my rendered photo is just screwing up some mates. The nut has a concentric and a coincident mate on it, to the PEM stud and to the sheet metal piece, respectively, but you can see what happens when I render it.

Other parts in my assembly (not just toolbox stuff) are doing the same thing, so as you can imagine, the machine looks like it's in the middle of exploding in the render view.

Any thoughts?

SolidworksPhotoview 360