Hi JTB, over here if I wait for about 6 minutes (2.4 Ghz CPU) it finishes and you can successfully write a .3ds file.

So I think just some patience will do the trick! :)

But since in this case you've got 288 copies of the same object, you're probably better off just saving out one of them to .3ds and then doing the array in your target system.

- Michael