Conversion Problem

Tramp Graphics

OK, this is driving me to distraction. I downloaded the free Kozure Okami set from here (fifth one down), and took the kimono and Hakama into Hexagon and fit them to Genesis, saved new object files and then rigged them starting with the Transfer Utility and then adjusting weight maps, including adding new bones to the sleeve drapes on the kimono. The kimono saved fine, but every time I try and rig the hakama and save that figure as a support asset, Daz crashes. Help!!!!

For the record, I'm using Daz 4.0, not 4.6