When trying to print a photo in Photoshop CC 2017, I get the following dialog...
“
There was an error opening your printer. Printing functions will not be available until you have selected a printer and reopened any documents.” There is no way to do as the dialog box asks. I have closed the document, gone into the system preferences, selected a printer, and then tried to no avail.
I am using a Mac Pro, running OSX Sierra 10.12.2, and an Epson 3880 with driver 9.33. I am able to print from the Mac Pro with Lightroom, but not with Photoshop.
I unplugged the printer from the Mac Pro and connected it to my MacBook Pro and I am able to print from Photoshop with the Macbook Pro, same OS, same printer, same everything.
I have done the following… uninstalled Creative Cloud desktop, Photoshop and Lightroom and reinstalled them, rebooted the Mac Pro, uninstalled and reinstalled all the printers and reset the printing system. I have unplugged the printer and disconnected and reconnected it.
I tried booting the Mac Pro from last night’s backup. I ran Photoshop from the back up drive and it was willing to print

??
I am at my wits end. Until this morning, all was well as it has been for years with this set up.
Google was unhelpful; often this forum is more helpful than Adobe.
Any help would be most appreciated