Okay, before you ask, I did do a forum search.
Anyway, I felt like making a shield mesh for the Leviathan, so I did a cob>dxf into blender, took one of the lower LODs and scaled, subsurfed, and moved a few vertices where bits were sticking out. But that's not important. When I try to get it into PCS it crashes. I get that startup pop-up for a bit then the "this program has had an error and needs to close". So after seeing stuff with lights and subobjects etc. I ended up just replacing the shield on an Ursa in hopes that I could import the mesh from PCS/Modiview. Still didn't work. Then it turn out I got the "e" and the "i" switched in the word shield. Fixed that, still crashes. Urg.....