Sorry, guys, I can't repeat your error. I exported quite complex object to .3ds and imported it to another application. All went smoothly. I have 2.44 with Python 2.5.

I'm using Windows XP. I don't know if that is important.

Yes, I have installed a lot of stuff, but nothing comes to mind which might make my installation different.

Btw, DramaKing, can you render from Blendigo? Or, if you have the other alternative, can you export and render that .igs?