We are trying to construct a 3D cortex model of a tumour subject. The recon-all.log showed that the program froze at Correction of the Topology with "XL defect detected." I followed the procedure of the online tutorial page ( https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/TopologicalDefect_freeview) and found that there's lots of "holes" and sharp abnormal shapes in the lh/rh.smoothwm.nofix file. It will be very hard to fix this by hand, and we wonder if you can give us some advice.

Sincerely,

Chuizheng Kong