I am using a epson CX 4100, and changes are not applied for the printer (even the "set default" change" I could not that if I try to change in WEB interface, I get printer not found... maybe because of the freak name of the driver?? (CX4100---CUPS+Gutenprint-v5.0.0-rc2) -- cannot configure printer https://launchpad.net/bugs/34112