Hi Danny - ooops, I was getting things crossed! But actually it still kind of applies - probably Simlab does not like to handle complex n-gons either so you would still probably want to switch from "Export : N-gons" to "Export : Quads & Triangles" for exporting out to Simlab.

Several rendering programs are just not accustomed to processing complex n-gons, MoI is pretty much the only program out there that can generate them in large quantities so it's sometimes not a very well tested area in the receiving program.

- Michael