Hello freesurfer developers, 

I installed FreeSurfer on my computer today using the instructions found here: https://surfer.nmr.mgh.harvard.edu/fswiki/DownloadAndInstall.   After installation, I proceed to the “test your FreeSurfer Installation” section.   Upon trying the first test, I ran the following and code and received the following error. 

Sherryses-iMac:~ sherrysecorrow$ cd $FREESURFER_HOME/subjects

Sherryses-iMac:subjects sherrysecorrow$ mri_convert sample-001.mgz sample-001.nii.gz

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

$Id: mri_convert.c,v 1.179.2.7 2012/09/05 21:55:16 mreuter Exp $

reading from sample-001.mgz...

TR=7.25, TE=3.22, TI=600.00, flip angle=7.00

i_ras = (-0, -1, -0)

j_ras = (-0, 0, -1)

k_ras = (-1, 0, 0)

writing to sample-001.nii.gz...

niiWrite(): error opening file sample-001.nii.gz

ERROR: failure writing sample-001.nii.gz

I’ve searched the list and was unable to find someone with the same error in the archives.   Any thoughts on how to fix this?  

freesurfer-Darwin-lion-stable-pub-v5.3.0

Mac OS X version 10.9.5

uname -a

Darwin Sherryses-iMac.local 13.4.0 Darwin Kernel Version 13.4.0: Mon Jan 11 18:17:34 PST 2016; root:xnu-2422.115.15~1/RELEASE_X86_64 x86_64

Thanks,

Sherryse

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