HOWTO: Install a Printer in Gnome
Installing a Printer in Gnome
Occasionally, adding a printer through the default Gnome settings will fail without error. If this is the case, you can use the system-config-printer utility from Red Hat's printer administration tool.
Open a terminal then switch to the root user:
Now use Entropy to download the printer system configuration tool:
# equo install system-config-printer-gnome --ask
Once the download and installation has completed, run the following command:
From here you should be able to add a printer with the add dialog.