Using --use-syn-sdc (without --ignore fieldmaps) in fmriprep runs into errors

Hi,

I wanted to apply the experimental method to perform susceptibility distortion correction in the absence of fieldmaps. Since I do not have any fieldmaps in my BIDS subject folder, I did not use the --ignore fieldmaps flag, nor did I use the --force-syn flag.

The use of the --use-syn-sdc flag lead to errors, while the command runs perfectly in its absence. Please let me know what I can do differently.

I have also attached the crash report.

crash-20191025-083209-root-atlas_2_ref-43a65658-90e6-405d-947e-be8eff94e339.txt (2.9 KB)

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