Hi @gptomaleri,
Thanks for the additional info. Do you know the version of cryoSPARC that dataset A was initially processed with? I assume this means that motion correction, CTF estimation, and particle picking/extraction was all done with the older version?
Regarding the final error, are you currently on Patch 210615 or later? We resolved a bug in that patch that may be responsible for the ValueError – do let us know if updating to patch 210615 (or the following patch 210622) doesn’t resolve it.
Best,
Michael