Hi everyone,

I hope this email finds you well.

I'm trying to run TRACULA on a subject using FreeSurfer 8 (working on Ubuntu 22).

However, when launching the first step of TRACULA (-prep), I encountered some issues with the creation of the dwi.bvecs file: after the LAS orientation, the dwi.bvecs file is empty. As a result, the symbolic links created afterward are incorrect, and the subsequent dtifit step produces empty files.

After some attempts, I realized that the problem is caused by the fact that the orientLAS command fails, thus creating empty files. 

I wonder if anyone has ever encountered the same type of error and if they could help me solve it. 

I've attached the log file, the script, and the configuration file I used to this email.

Best regards, 

Gabriella Monopoli