Hi Daniel, Both of the cases you sent us had a fair amount of neck/spine remaining after the skullstrip step which caused mris_fix_topology to fail. I processed both cases again using the following command and recon-all finished without errors:

recon-all -skullstrip -autorecon2 -autorecon3 -s [SubjID]

Sometimes running the skullstrip step a second time can get rid of or reduce large portions of skull/dura which were not removed during the first pass. With those two cases there is still some skull/dura left which you could try to remove by playing with the skullstrip watershed parameters. See this wiki page for details:

https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/SkullStripFix

-Louis

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From: "Daniel Ferreira Padilla" danifer@ull.es Date: September 15, 2011 5:48:30 AM EDT To: fischl@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Recon-all Error: _FindFacePath

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Dear Bruce,

Thank you very much. I have uploaded these two subjects to the file drop linked to your email (fischl@nmr.mgh.harvard.edu). It should be going to you.

Thanks again

Daniel Ferreira