Hello,

I am working through the tutorial fro FSFAST, and am up to the Preprocessing 
step. I followed the instructions as indicated and was not receiving errors up 
until the following command:

preproc-sess -s sess01 -fsd bold -stc up -surface fsaverage lhrh -mni305 -fwhm 
5 -per-run

With this command I receive the error after the code runs for a while:

MRISread(/home/fsfast-tutorial.subjects/fsaverage/surf/lh.sphere.reg): could 
not open file
Reading target registration
   /home/fsfast-tutorial.subjects/fsaverage/surf/lh.sphere.reg
No such file or directory
ERROR: could not read 
/home/fsfast-tutorial.subjects/fsaverage/surf/lh.sphere.reg

Checking the fsaverage/surf folder I do not see lh.sphere.reg or rh.sphere.reg. 
In the fsaverage/surf folder of my freesurfer home subjects, lh.sphere.reg and 
rh.sphere.reg are present.

My question is: is rh.sphere.reg and lh.sphere.reg something that is created 
during the tutorial (ie is something wrong with my freesurfer installation that 
it cannot create these files), or are they simply missing from the tutorial 
subjects folder?

I downloaded the tutorial package this week, and am using ubuntu 16.04 and 
freesurfer version 6.

Any help would be greatly appreciated. Thank you.??
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