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Hello, so the command I used is: mri_easyreg --ref MP2RAGE_uni_resampled_2mm.nii.gz --flo sub017_ute_anat.nii.gz --ref_seg mprage_seg.nii --flo_seg ute_seg.nii

The output I get is: Illegal instruction

I also tried putting the absolute path to the files, but I get the same output. And, I also tried to get the help (but I'm not sure if there is one) by typing mri_easyreg --h and mri_easyreg --help, but I get the same Illegal instruction output. I'm running it on CentOS Linux 7 server.

The output from cat /etc/redhat-release CentOS Linux release 7.9.2009 (Core)

Thank you for your help! Sara

On Thu, Aug 15, 2024 at 12:45 AM fsbuild fsbuild@contbay.com wrote:

Hello Sara,

Please send along the terminal output from running the command so we can see the error.

Maybe you could also let us know what version of CentOS you are running, e.g., also include the output from,

$ cat /etc/redhat-release

• R.

On Aug 14, 2024, at 15:32, Sara Ponticorvo ponti045@umn.edu wrote:

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Hi Freesurfer experts! I am trying to use mri_easyreg. I've installed freesurfer v7.4.1 on my centos machine but when I try to run mri_easyreg I've "Illegal instruction" message. Do you have any suggestion on how to solve it?

Thank you, Sara _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer