Hello FreeSurfer Developers,

I'm running the recon-all on my subjects data as described in freesurfer tutorial (https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial), but it shows the following error when I run the recon-all command:
 
 ERROR: cannot find CON_101.nii
 recon-all -s  exited with ERRORS
  

I've tried so many times but still shows same errors. Does anyone have any thoughts on how to trouble-shoot this one? Also, Ive attached the recon-all.log in case it's of any use. 

1) FreeSurfer version: freesurfer-Linux-centos6_x86_64-stable-pub-v5.3.0
2) Platform: Red Hat Enterprise Linux 7
3) uname -a: Linux lcmodel 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
4) recon-all.log: see attached