Hi, Joy-

First point: I assume it is the 2nd command there giving that error? That makes it look like the "-input .." file is damaged/corrupted; you can check that in a Reynoldsian way with seeing what this produces:

3dBrickStat -slow -min -max C01_2_t1_tl+tlrc

Does that produce an error?

Second point: for warping to standard space, using @auto_tlrc would *not* be our preferred method; we typically recommend using @SSwarper before afni_proc.py to perform both skullstripping (SS) and nonlinear warping to standard space. The results of that warping are provided inputs to afni_proc.py-- the helpfile of the @SSwarper program shows how that is done, as do some of the afni_proc.py examples. Do you have a particular reason for wanting to use @auto_tlrc, and also for applying it outside of afni_proc.py (we also recommend putting the warp-to-standard-space step inside of afni_proc.py, so that only a single warping/regridding step is applied to your EPI information, to avoid having unnecessary smoothing added to it).

So, while it would be good to sort out what is happening in the first point, it would be good to hear your thoughts on the considerations of the second point, too.

--pt