I have added a subject to the to the groups of subject that was available for the qdec tutorials. with this in mind I have used make_average_subject and I have now 41 subject. But when I run this command there is always a subject for which it can not find brain. I am positive that the necessary files are available. The subject that I have add is anonymous mri picture that i have imported into freesurf, and the subject is 20 years old female.
Knut J