Adam,
I do not get the same error here, I tried on my MAC Intel, OS X 10.4 and on linux using xorg7 binaries. Perhaps it is something that got recently fixed so I recommend you try again with recent binaries, preferably those who will get baked tonight.
The dataset output by the command you specified can be found here:
[
afni.nimh.nih.gov]
cheers,
z