Hi Stephanie - Please send along your configuration file and the log file from scripts/trac-all.log. It's hard to guess just by seeing the error message. Thanks!

Anastasia. ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Stephanie Otto sotto@nevada.unr.edu Sent: Thursday, December 2, 2021 2:25 PM To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] TRACULA error

External Email - Use Caution

Hello Freesurfer Team,

I am trying to get TRACULA running on two different machines (Macbook Pro OS 11.6 and Mac desktop OS 10.14.6). I get the same error message on both devices, which is:

domainname: Command not found.

ERROR: for B0 distortion correction with reverse-polarity DWIs

ERROR: or for model-based eddy-current distortion correction,

ERROR: must specify PE direction

I can't find an answer as to how to correct this in the email support archive or through Google. If anyone could assist me, I would greatly appreciate it. Thanks in advance for all your help.

Best, Stephanie Otto Doctoral Candidate, Cognitive and Brain Sciences Program Department of Psychology, MSS 424/MS0296 University of Nevada, Reno sotto@nevada.unr.edumailto:sotto@nevada.unr.edu