Your printers will disappear, and you will then need to set them up again. If maintenance routines do not help, go to the Print & Fax system preferences, right-click the printer list, and select the option to reset the printing system. This can be done with the utilities mentioned in our General Maintenance guide. In addition, you might try using a maintenance tool to remove system and user caches. Try booting the system into Safe Mode (restart while holding the Shift key) and then running a permissions fix on the boot drive using Disk Utility when in Safe Mode. If this has happened to your system after applying the latest OS X 10.6.8 update, try the following options to see if they fix the problem: Printer-state-message='/usr/libexec/cups/backend/lpd failed People experiencing this problem may see an error in the system console (shown in the Console utility) that mentions a problem related to 'backend' such as the following: The printer will still be installed, but print jobs fail and the printer is stuck in a paused state.

A number of Mac users have run into a problem after applying the OS X 10.6.8 software update that was released yesterday, in which their printers have stopped working.

Maintenance for mac os x 10.6