I actually like MC but I've got some issues with the Print Leveling.
I don't want to use it as my printer has auto bed leveling via G29 (and so I don't like to be forced to complete the paper-calibration after adding a printer .
I've enabled Printer->Features: "Has Hardware Leveling" and so the Print Leveling Options hiding.
But I cannot start printing because of the above error message. There seem to be some point where MC still thinks Print Leveling is enabled.
I've changed it for every Printer Quality setting tht that may help but it didn't.