A little more about your setup would be helpful. platform, ram, etc. Also, does it crash if you try to export models in formats other than zxo? Does ProAnimator crash when exporting ZXO as a plug-in AND as a standalone?
If it's a regular, repeatable problem, I'd contact Zaxwerks tech support directly. It helps them to know exactlly what steps cause a crash as well as your specific system data.
I Use Windows XP Media Center Edition 2004,P4 3.2 Extreme Edition,2g Ram Pc 3200(400 Mhz),After Effects 7.0,And Zaxwerks Invigorator Pro 4.0.7,Proanimator 4.0.1. It Craches When I Press 'export 3d Model' Command.
Since I Used Proanimator 4.0.2 And Invigorator Pro 4.0.8, The Export Problem Solved But I Am Not Able To Use Any Greek Fonts In 'Create 3d Text'.