Thanks, I'll give it a try

Chris...not sure what a plist or p.list is so I'll have to go searching for it. Thanks

Its on an Intel Mac. The model is a simple box that is grouped. I can export to other formats. Its just the 3DS which is weird! Thanks Chris

I've created a model and grouped it. I select export >3D model>3DS and go to options. When I click on the options button it won't go to an options screen so I can customize my export. Any suggestions on how to make this work would be greatly appreciated!