I got Cura up and running, and was impressed with the variety of settings available. Perhaps most impressive was the ease of positioning the workpiece on the print bed.
I finished setting up a print, and went to save it to the card. The only available option was to save it as a .3mf file, so that's what I did. The Folger properly noticed when the card was inserted, and I did the knob-and-screen thing and selected 'print from card'.
The machine then ignored the card. I plugged in the laptop and selected Repetier's 'card' tab, which indicated that the card was empty. I ran back up to the office and plugged the card back into the desktop 'puter, and lo and behold, the card was not empty. The .3mf file was sitting right there like it should.
If Folger does not like .3mf files, I need to save a print job in another format, but .3mf appears to be Cura's sole option.
What am I missing?