Suddenly unable to print to a postscript file FM10/12 Windows 10

All of a sudden, my system (Win 7, 64 bit, Build 1709) is now unable to create a postscript file using the Print to File option with the Adobe Printer selected. Although I  have not changed any Adobe PDF printer settings since the cows came home, the message that I am receiving is the long forgotten and improperly worded issue about relying on system fonts and not using document fonts:

When you create a PS file, you must rely on system fonts and use document fonts. Please go to printer properties, "Adobe PDF Settings" page and turn OFF the option "Rely on system fonts only; do not use document fonts."

I went and checked and in BOTH places where this option should be TURNED ON is indeed turned on. (Adobe PDF Printing Preferences and Adobe PDF Printer Properties > Advanced > Printing Default.)

I have had this option checked in both places on multiple systems (Win 7, Win 10) for both FM 10 and 13 and now, all of a sudden, this single Windows 10 system on which the function has been working for over a year has jst  cr*pped out for no apparent reason.

I can still Save as PDF and I can print to a PDF but as we all know, being able to print to a PS file and then distill it is much more advantageous for certain FM books/files. Any/all thoughts are sincerely appreciated.

TVB