It looks like you might only have ten total subbricks in that dset, looking at the error message:
** ERROR: selector index 10 is out of range 0..9
AFNI, as many programming languages like C and Python do, counts starting from 0. So, for a ten item list, you can use indices 0, 1, 2, 3, ..., 9.
If you type:
3dinfo -nv DSET
that will tell you how many volumes in your DSET.
If you type:
3dinfo -nvi DSET
that will tell you what the *maximum index* of your dset is-- which should be N-1, for an N volume dset.
-pt
