Unable to edit CUPS config file

If you’re setting up a new Print Server, or adding new Printers to a Mac as per the Add/Remove Printers on Mac documentation: Ensure that you have at least one Print queue set up on your Mac Run /Applications/PaperCut NG/Control Printer Monitoring.command If you then see errors in the Terminal app relating to: Unable to edit CUPS config file or Incorrect password Then you can also try running the ‘configure cups’ command manually: Open the ‘Terminal’ application on the Mac Run: sudo su (that should elevate you to run as root, and ask for your admin password) Run: cd /Applications/PaperCut\ NG/providers/print/mac/ (or wherever you have installed PaperCut on your machine, to change directory to the print provider’s ‘mac’ directory) Run: ./configure-cups (that should run the command manually to register the printers, running as root from above) Set each printer in the list as you require - e.g. (E)nable/(D)isable/(L)eave