Hi Ioannis - Any chance that you're running into this previously reported (and addressed) problem?
https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg71427.html

Anastasia.

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of John Pap <mentadexx@gmail.com>
Sent: Sunday, January 16, 2022 5:40 AM
To: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Tracula -prep error: cannot stat dwi_orig_las.1.bvecs
 

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Hello to everyone!

I'm trying to run the preprocessing step of tracula to my subject and I keep getting the following error:

mv: cannot stat '/home/ioannis/FFF/KORO/T1_nii/trc/Subj_koro/dmri/dwi_orig_las.1.bvecs': No such file or directory

As a matter of fact this file was never created during the process. My files are in nifti format and I try to reconstruct the corticospinal tracts.
I attach my configuration file and the log file.
Thanks in advance for your help!

Ioannis P.