When you set a variable to a list of multiple things, you need parentheses around them (see the example config file for this). My recommendation to make things simpler for yourself is to remove any variables where you are just using the default settings, and only keep the ones where you define where your input files are (see also tutorial for this). ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Benxamin varela l?pez benxatic@gmail.com Sent: Wednesday, December 4, 2019 2:24 PM To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] TRACULA QUESTION:CONFIGURATION FILE ISSUE

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Dear Freesurfers experts,

I'm a beginner in the diffusion imaging preprocessing. I was following the freesurfer/dti tutorial with my own data when i get stuck in the trac-all step. I have created the configuration files trying to follow the tutorial instructions and when I tried to run the trac-all command I get the following error:

pcpb3846:4220 lab1-rmn$ trac-all -prep -c $TUTORIAL_DATA/outputs/dmrirc.tutorial

set: Variable name must contain alphanumeric characters.

ERROR: must specify either one number of control points

ERROR: or as many numbers as pathways

You can find my configuration file in attached. Any help would be very appreciated.

Thank in advance.

Best regards,