Hello Freesurfer developers,

I am trying to concatenate session files of different subjects using isxconcat-sess. I am not really sure why " INFO:trgsubject is self, this will fail unless all sessions are the same subject" pops up as I understand this is what isxconcat-sess is meant to do, and I used --subject fsaverage in some tries. I am not sure if there is something I am doing wrong, or the problem is coming from the "//" in the output lines. When I took out either Sess01 and Sess02 from the list to be sure it wasn't a problem specific to it, I got the same error.

Below is the error output.

Best
Idil

INFO: trgsubject is self, this will fail unless all sessions are the same subject
group/rtopyTR2.lh/log/isxconcat.log
cd /home/vm01/local/freesurfer/Project_bold
isxconcat0-sess -f sessid -m mask -o group/rtopyTR2.lh/masks.nii.gz -a rtopyTR2.lh
------------------------------------
/home/vm01/local/freesurfer/Project_bold
mri_concat /home/vm01/local/freesurfer/Project_bold/Sess01/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess02/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess03/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess04/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess07/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess08/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess09/bold/rtopyTR2.lh//mask.nii.gz /home/vm01/local/freesurfer/Project_bold/Sess10/bold/rtopyTR2.lh//mask.nii.gz --o group/rtopyTR2.lh/masks.nii.gz
ninputs = 8
Checking inputs
ERROR: dimension mismatch between /home/vm01/local/freesurfer/Project_bold/Sess01/bold/rtopyTR2.lh//mask.nii.gz and /home/vm01/local/freesurfer/Project_bold/Sess02/bold/rtopyTR2.lh//mask.nii.gz