Hello PWHammond,
I am not sure what would be causing that error since the upgrade. I would recommend contacting the Support Department to speak with an Analyst.
We have reports from multiple users now across several departments that once they upgrade past 10.15.1 printing to thier C70 breaks (jobs show as aborted with a code 016-757). Tests using the current driver version 5.4.2(2138) listed from Dec 23, 2019 do not fix the issue. Only work around at the moment is to upload jobs through the Print tab on the copier web page.
So is this a Xerox issue again or Apple again or is there a firmware fix we need to apply to the machines?
Comments are welcome! Thanks!