Hi Rick, blur and regress blocks complain when I remove the mask block.
-- tcat: reps is now 152
-- volreg: base/sub indices are 0, 0
++ volreg: warping to isotropic 3 mm tlrc voxels
++ updating polort to 3, from run len 380.0 s
-- empty file /home/owner/task1/rontask_Data/RON3/data/PSK403/timing/NoResponse.txt okay as local_times
** empty stim file /home/owner/task1/rontask_Data/RON3/data/PSK403/timing/NoResponse.txt (consider 3dD -GOFORIT ...)
** refusing to estimate blur without a mask dataset
(masks are not applied without -regress_apply_mask)
** script creation failure for block 'regress'
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** failed command (create_script):
afni_proc.py -subj_id 403 -script afni_psk_403.tcsh..................................