Hi Rick,

I found a workaround to this problem. However, for future reference, it might be good to know what my options are.

Yes, I did add the -num_glt option to the -regress_opts_3dD command. So that didn't work. When I ran afni_proc.py and tried to compute more than 10 GLTs with -regress_opts_3dD, I got an error saying I needed to use the -num_glt option to allow for more than 10 GLTs.

Here's the gist of the command I ran:

afni_proc.py \
-regress_stim_times {stim_time_files} \
-regress_stim_labels {stim_labels} \
-regress_basis_multi 'BLOCK(1,1)' \
-num_glt \ #this is where I added the num_glt command, but it did not work
-regress_opts_3dD \
-jobs 4 \
-gltsym '{contrast_1}' \
-gltlabel {label_1} \
...
-gltsym '{contrast_11}' \
-gltlabel {label_11} \
-regress_run_clustsim no \
...

Thanks for looking into this.

Phil