@David Preutz Hi there David, Hope all’s good with you. Well done keeping 4800's going.
For now, to save on a clean install, you can optionally log into your mac as a guest user, which apparently disables lots of old settings / app preferences, etc. maybe that will make the printer work. I realise it's not a full time solution, though.
have you tried all this:
On your Mac, choose Apple menu System Preferences, then click Printers & Scanners
Press and hold the Control key as you click in the list at the left, then choose “Reset printing system” from the menu that appears.
After you reset the printing system, the list of printers in Printers & Scanners preferences is empty.
Reinstall the print driver, only from the manufacturer, not Apple.
Also (for both Mac and Win) take a look at the following article and check if that helps:
https://helpx.adobe.com/photoshop/using/printing-color-management-photoshop1.html
You may like to re-install the printer drivers to check if that makes a difference?
Here is some general Adobe [Mac and Win] info on printing problems,
https://helpx.adobe.com/photoshop/kb/troubleshoot-printing-problems.html
Simple reset for Photoshop printing: hold the space bar when you open the print window. It resets the print dialogs - deleting possibly corrupt print metadata in the file.
- - - - - - - -
If that doesn’t help -
Here is some troubleshooting advice:
https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html
Are you actually using the Epson supplied driver? in many cases users are struggling with the default MacOS driver (one clue is whether you see all the proper Epson media names in print settings.
Here's an example of what I'd expect to see in an Epson driver under "Media Type" for media name options:

neil barstow - adobe forum volunteer,
colourmanagement consultant & co-author of 'getting colour right'
See my free articles on colour management
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