I have been successfully importing Daz V4 characters even managed to modify the iCloneFaceKey file for Studio to get facal animations in to 3Dx6. I recently tried to FBX a character I created some time ago but never got around to using in Iclone into 3Dx6 Did the usual FBX export and this happened "see below" the clothing is fine but the character had kind of exploded. For clarity I am using 3Dx6 pipeline
I did some experimenting and it looks like during the original opening of the base figure in studio the SubD info was included. now even if I tick the include SubD info box during the FBX export it still fails but this time by crashing 3Dx6
Daz Help files warns of potential problems with Subd info and morphs within Studio (
http://docs.daz3d.com/doku.php/artzone/pub/software/subd/start) So this may cause problems with the FBX files as well (Just eduguessing here)
Once created the SubD info cant be removed from the figure so you will have to start from scratch by loading a base figure untick the SubD box in the advanced tab of the powerloader dialogue during loading. and rebuild your character in Studio
But this fixed the FBX import into 3Dx6 for me
FBX import with SubD info activated in Studio
ps