Dear Freesurfer Developers, 

My goal is to build a study-specific pediatric template brain to rerun the recon-all-all. I am encountering the same error while running make_average_subject Freesurfer version 6.0.0 on MacOS High Sierra 10.13.6 as described here and implemented the suggested changes replacing mri_glmfit-sim, make_average_subject, make_average_surface, and mri_aparc2aseg: https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2017-November/054933.html 

Yet, another error persists.

Any help would be appreciated.

Thanks, 

Laurel