I had that a few weeks ago.
I think it happens when some files are missing / deleted, possibly in various attempts at installing a printer. I could not find a way to solve it - had to reinstall from a live CD.
To test- run a live CD. It should show the correct -PCLinuxOS Control center -hardware -printing and scanning icon. You should then be able to install the printer.
you can then install from the live CD, or better, from the install icon. You may, or may not lose all your customizations/settings, and you may have to reinstall the printer again.
Having to re-install from a live CD is a chore.
It can take 20 - 30 mins. But in W.. allow hours!