Hi all!

I'm just learning CONN and I'm having some issues with the preprocessing stage. I'm able to upload niftis of functional and structural data, but ~5 seconds into preprocessing I receive an error saying it cannot read the functional files. I'm running the "preprocessing pipeline for surface-based analysis when FieldMaps are available" in an interleaved bottom-up slice order on v22.a of CONN. The error is as follows:

ERROR DESCRIPTION:
 
Error using read_hdr
Error reading header file "/home/lab/Desktop/Demo/demo/001/001_D1/s1001/1001_rsfMRI_1_rsfMRI_1_1001'c.nii".

Error in nifti (line 26)
 vol = read_hdr(fname);

Error in conn_expandframe (line 23)
 ni = nifti(filename);

Error in conn_setup_preproc (line 3334)
 if numel(fmap)==1,fmap=cellstr(conn_expandframe(fmap{1})); end

Error in conn (line 1386)
 ok=conn_setup_preproc('',varargin{2:end});

Error in conn_menumanager (line 124)
 feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end}); 
CONN22.a
SPM12 + DAiSS DEM FieldMap MEEGtools
Matlab v.2023b
project: CONN22.a
storage: 1410.9Gb available
 
spm @ /home/lab/bin/spm12
conn @ /home/lab/bin/conn

Any insight would be much appreciated. Thank you!