Trouble opening SolidWorks part file

I have a SolidWorks part file that I can open and see a wireframe. But trying to do anything it just disappears from view! If I Select All from the keyboard it tells me there are 8 polysurfaces and such but nothing I can do makes anything appear. Previous ver 6 and latest do the same thing. This file was not created by us, it has a lot of imported surfaces. The purpose of opening it in Rhino is to simplify it in a way that is difficult to do in SW.


Hi Gary - can you PM me the file or upload to

Does SellBadObjects light anything up? Are the objects far from the origin?