I just recently followed the steps to install Freesurfer on my Mac. The installation initially seems to have gone fine, but when I try to test the installation by using the listed "Example 1: Convert the sample-001.mgz to nifti format," I get the following error:

-------- freesurfer-Darwin-OSX-stable-pub-v6.0.0-2beb96c --------

Setting up environment for FreeSurfer/FS-FAST (and FSL)

FREESURFER_HOME /Applications/freesurfer

FSFAST_HOME /Applications/freesurfer/fsfast

FSF_OUTPUT_FORMAT nii.gz

SUBJECTS_DIR /Applications/freesurfer/subjects

MNI_DIR /Applications/freesurfer/mni

scott-pruetts-computer:~ scottpruett$ cp $FREESURFER_HOME/subjects/sample-001.mgz

usage: cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file target_file

cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file ... target_directory

scott-pruetts-computer:~ scottpruett$ mri_convert sample-001.mgz sample-001.nii.gz

mri_convert.bin sample-001.mgz sample-001.nii.gz

$Id: mri_convert.c,v 1.226 2016/02/26 16:15:24 mreuter Exp $

reading from sample-001.mgz...

mghRead(/Users/scottpruett/sample-001.mgz, -1): could not open file

scott-pruetts-computer:~ scottpruett$

Any ideas about what I should do to remedy this?

Thanks,

Scott

Scott Pruett, M.D., Ph.D.

General Psychiatry and R25 Research Track Resident, PGY4

Department of Psychiatry and Human Behavior

Warren Alpert Medical School of Brown University