cups 1.2 don't support option "RunAsOption" anymore but cups-pdf needs root privileges.
sudo chmod +s /usr/lib/cups/backend/cups-pdf
Now it should be visible in web-interface and will work.
cups 1.2 don't support option "RunAsOption" anymore but cups-pdf needs root privileges.
sudo chmod +s /usr/lib/ cups/backend/ cups-pdf
Now it should be visible in web-interface and will work.