/usr/lib/cups/filter/ a
usr/lib/cups/filter/ has the rastertosamsungsplc and rastertosamsungspl in it and permissions are the same as other execute files. /usr/share/cups/model/foomatic-db-ppds/Samsung/ I put the CLX3170splc.ppd.gz (driver for my printer CLX3175FN) in that directory. And I still get the same error message in cups setup when I try to Print a Test page. Idle - /usr/lib/cups/filter/rastertosamsungsplc failed