Current working Gutenprint driver for 10.12 is here: sourceforge.net/projects/gimp-print/files/gutenprint-5.2/5.2.11/gutenprint-5.2.11.dmg/download
Current working Gutenprint driver for 10.12 is here: sourceforge.net/projects/gimp-print/files/gutenprint-5.2/5.2.11/gutenprint-5.2.11.dmg/download