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Hello!
I have recently installed freesurfer and was attempting to reconstruc some exams but I keep getting this error message

Pedros-Air:subjects pedrobarradas$ recon-all -i 01.nii. -s test1  -all

ERROR: cannot find 01.nii.


recon-all -s  exited with ERRORS at Mon May  1 16:51:37 WEST 2023


For more details, see the log file 

To report a problem, see http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting



I'm not sure what I am doing wrong.
Any help would be tremendousy appreciated.

Best Wishes
Pedro Barradas