Hi John,
It is peculiar that it happens with just a couple of your datasets,
and that I don't recall anyone bringing this up before. Can you think
of anything special about those datasets, that might differentiate them
from ones that work for you?
Please feel free to upload some data, and I will try it out on a couple
of machines here. If you would, please include the anat, the olay that
fails, an olay that does not fail and a short README file.
- rick