Hi Elizabeth - Have you tried running this with the latest version (7.2)? It looks from the log file like you used 6.0. The tutorial and other info on the wiki apply to the newest version only. Let us know if you are still having this issue.

Thanks, Anastasia. ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Kaplan, Elizabeth elizabeth_kaplan@brown.edu Sent: Saturday, October 23, 2021 8:04 PM To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Tracula -- Segmentation Fault

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I ran recon-all on a group of three subjects, followed by trac-all -prep

This process exited with errors: Segmentation fault

Original DWI and T1 images appear normal, with no large distortions or missing voxels.

My configuration file and trac-all.log are attached below.

Any guidance is appreciated!

-- [Brown logo] Elizabeth Kaplan '22 She / Her / Hers Sc.B. Candidate Cognitive Neuroscience B.A. Candidate Contemplative Studies 69 Brown St Mail #4391 Providence, RI 02912