I am trying to print in Firefox with my Dymo 450 Turbo Label Printer on a Mac OSx 10.11. Everytime I go in, I have to adjust the settings as it is not saving the preset settings. I have set presets before with no problems, but now every time it opens the print page, it is back to default settings. I have deleted and reinstalled Firefox, reset the printer settings and still it won't save the print settings. About:config setting save_print_settings is set to true. Can you please help with why this is happening and how to correct it. Thanks in advance