Hello Freesurfers,

I was attempting to reconstruct a monkey brain, i encountered an error during talairach registration step, i have used tkregister2 to manually edit the registration but i have gotten error there too:

tkregister2 --targ /usr/local/freesurfer/subjects/monkey/mri/orig/A04_crop.mhd.nii --mov /usr/local/freesurfer/subjects/monkey/mri/orig/A04_crop.mhd.nii --reg /usr/local/freesurfer/subjects/A004_crop.mhd.nii
tkregister_tcl /usr/local/freesurfer/tktools/tkregister2.tcl
target  volume /usr/local/freesurfer/subjects/monkey/mri/orig/A04_crop.mhd.nii
movable volume /usr/local/freesurfer/subjects/monkey/mri/orig/A04_crop.mhd.nii
reg file       /usr/local/freesurfer/subjects/A004_crop.mhd.nii
LoadVol        1
ZeroCRAS       0
$Id: tkregister2.c,v 1.132.2.1 2016/08/02 21:17:29 greve Exp $
Diagnostic Level -1
regio_read_register(): No such file or directory
Could not open /usr/local/freesurfer/subjects/A004_crop.mhd.nii
ERROR: reading /usr/local/freesurfer/subjects/A004_crop.mhd.nii

Do you have any thoughts on how to troubleshoot this one?

Regards,

frehiwot