Hi Xiaoyu

how are you trying to create an average subject? It looks like you are running recon-all on something. Typically we use the script make_average_subject for this

cheers Bruce

On Wed, 11 Jul 2018, Wang, Xiaoyu wrote:

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Hello FreeSurfer Developers,

I am attempting to perform group analysis on a group of subjects. However, When I am trying to create an average subject I get the following error.

mghRead(mri/norm.mgz, -1) could not open file

I went into the average folder but I could not find norm.mgz anywhere.

Looking further up on the log, it would seem that norm.mgz is supposed to be relabled from aseg.presurf.hypos

However, said file is still there.

I have looked in the wiki and found a few others who have had similar issues to me however, I can’t see the solution or a reply. Does anyone have any Idea what I’m doing wrong?

I have attached the recon-all.error as well as the recon-all log if it will be of any help

Sincerely

Xiaoyu Wang