Hello,
It is hard to be sure, but it looks like you are
running from tcsh, but your PATH variable is not
being propagated to 'sh', which appears to be
getting used for running qhull.
What is the output of these 2 commands:
afni_system_check.py -check_all
sh -c 'echo $PATH'
Feel free to post it or send it via email.
- rick