Mine came up with this attached message and I am on High Sierra. It say the system extension wasn't loaded properly. It's been loaded a long time. Our HP printers are like the Cuban cars that they just fix over and over. We need them to print the barcodes on our PO's. HP has a bar code dimm that Xerox walkup prints don't offer.
After reading that some of yours worked today, I tried and mine printed today, as well. Trend may have been blocking it as someone mentioned.
After reading that some of yours worked today, I tried and mine printed today, as well. Trend may have been blocking it as someone mentioned.