$ which afni:
/usr/local/afni/bin/afni
$ afni --ver
Version AFNI_2008_07_18_1710
[[Precompiled binary macosx_10.4_G5: Oct 14 2008]]
The strange thing is that the TTatlas+tlrc files, which afni claims it can't find, are also in /usr/local/afni/bin, the same location as the afni viewer.
I have installed afni on both Linux and Mac machines and have never come across this problem.
BTW, if this is any clue, I had an earlier version from April installed and had the same problem. I thought that if I updated to the latest version it might solve the problem, but the problem persists.
Many thanks,
Robert