afni.nimh.nih.gov

This is odd, the problematic message appears to be:

RT: sending dataset rt.__001+orig with 2 bricks to AFNI[A], session /usr/local/afni/bin/

But it should be writing to the directory that you are in, not /usr/local/abin/bin.

Is there any chance that you have modified the demo.1.run script? Would you mind displaying your demo.1.run script?
And to be sure, exactly what directory is the script in?

Thanks,

- rick