Hi Rosalia
try changing the window/level or min/max in the display of the volume. Although the brainmask intensities are irrelevant. Anything <5 will be masked out, so as long as it more-or-less outlines the brain v nonbrain boundary you should be fine.
cheers Bruce
On Fri, 23 Nov 2018, Rosalia Dacosta Aguayo wrote:
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Dear Free Surfer experts, I am experiencing a problem with 4 participants. Whrn I open the brainmask with freeview, it appears white (binarized). I was editing this brainmask and at sone point I switched something and it changed to white. I deleted alk the files and I run recon-all - autorecon1. The problems persists and recob-all -autorecon1 finished with errors. I do not know how to solve this problem. I would much appreciate your help.
Best regards, Rosalia