I was going to reinstall Cura, but I started with loading the printer.
I have 3 and they're similar enough to use same G-Code.
So in my config it is Custom Printer. I added printer with same settings as the original, same start and end codes, just different name.
Save to SD works now.
Possible something got corrupted when I upgraded Cura.
I deleted original printer from Preset Printers.
Rob