Hi Tamara-
That's a curious error message. Can you post your entire afni_proc.py command?
Also, it's worth updating your binaries for a variety of reasons. But one of the main ones is that we're currently recommending doing the nonlinear warp (and skull strip) outside of afni_proc.py using
@SSwarper. An example usage is:
@SSwarper -input 9409.anat+orig -base MNI152_2009_template_SSW.nii.gz -subid 9409
You would then provide the outputs of that script to afni_proc.py:
-tlrc_NL_warp -tlrc_NL_warped_dsets anatQQ.${subj}.nii anatQQ.${subj}.aff12.1D anatQQ.${subj}_WARP.nii
-Peter
