Dear CONN community,

I am currently trying to use the automatic import function in:

Project → New (import) → From fMRIPrep dataset

However, the importer does not create any subjects.
When I select my fMRIPrep root folder, CONN shows something like:

“1 folder selected, XXXX matching files”

but after clicking OK, nothing happens and no data are imported. No error message appears.

Folder structure

My fMRIPrep output is located in:

...\derivatives\
      fmriprep\
          dataset_description.json
          sub-01\
              anat\
              func\
              figures\
              log\
          sub-02\
              anat\
              func\
              figures\
              log\
          ...
          sub-15\

The folder name is exactly fmriprep, and dataset_description.json is directly inside this folder (not inside subject folders).

Filename structure

Originally, subjects were named like sub-VP105, so I renamed them to numeric BIDS-style names:

sub-01_task-RS1_space-MNIPediatricAsym_cohort-6_desc-preproc_bold.nii.gz
sub-01_task-RS2_space-MNIPediatricAsym_cohort-6_desc-preproc_bold.nii.gz

I am using the NIH Pediatric MNI template (MNIPediatricAsym) from fMRIPrep.

Manual loading of functional and structural files into CONN works without issues.
Only the automatic fMRIPrep importer does not detect any subjects.

I would like to use the automatic importer for a larger dataset (≈90 participants), so understanding why my current dataset is not detected would be very helpful.

Thank you very much!
Ricarda