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Dear FreeSurfer Community,

I'm longitudinally processing a significant amount of secondary scan data, to get hippocampal subvolumes for a study I'm working on.

Of the hundreds of scans I've processed so far, 18 have failed on line 2136 of SegmentSubfieldsT1Longitudinal.m--a subprocess of the segmentHA_T1_long command-- all with the same final lines:

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Fitting mesh to image data mask took, at this global iteration and time point, 20.7436 seconds

Transforming points

Wrote image to file image_tp_1.mgz

Computing shift introduced by kvlRead

Constructing image-to-world transform from header information (asmr1.mgz)

Constructing image-to-world transform from header information (/mnt/md0/ScratchPad_/ABCD/Package_1234721/image03/derivative/freesurfer/freesurfer8.0.0/NDARINVGCPTFXEV_long/tmp/hippoSF_T1_long.v22_right/imageDump.mgz)

Wrote image to file asmr2.mgz

This file does not contain MRI parameters

Unable to perform assignment because the left and right sides have a different number of elements.

Error in SegmentSubfieldsT1Longitudinal (line 2136)

MATLAB:matrix:singleSubscriptNumelMismatch

Command exited with non-zero status 249

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I've searched the list and no similar errors have been reported. Does anyone know what may be the problem? 
I'll attach a couple of the long-hippocampal-subfields.log's in case they can be of help.

FreeSurfer version: 8.0.0
System: Ubuntu 22.04.5 LTS, 512GB RAM

Thanks,
Robert