Try reseting print system on mac and than reinstalling. I also found that running alsoft disk warrior some times helps with this issue.
to reset printing system go to system preferences/printer and scanners than left click or control click in printer window and it will give a option to reset printers system. It throws away all printers . Than reboot and load driver again.
I deleted the previous driver for the printer. Restarted the computer and Photoshop still quit as soon as I clicked on the print settings button. I deleted the driver once again, went to Xerox site and reinstalled a driver specifically for Mac OS 10.11. The same results. As soon as I click on the print settings button it crashed. I have restarted the mac several times. no help.
Mac OS uses a post script driver.
Make sure you are downloading the correct version.