![]() Printer-state-message="/usr/libexec/cups/backend/lpd failed When your print job fails you should see a message similar to the following (in this case it is the "lpd" backend): ![]() Open the "Console" utility to see what backend file is being used. ![]() Type "/usr/libexec/cups/backend" in the field and press enter to go to the hidden "backend" folder. In the Finder's "Go" menu select "Go to Folder" In order to do this, you will need your Time Machine backups or another Mac running OS X 10.6.7 and then run the following procedure: Use the Finder's "Go to Folder" option to open the hidden "backend" folder While some people may benefit from the aforementioned fixes of running general maintenance, resetting the print system, and reapplying the latest "Combo" updater, it appears a true workaround until Apple addresses the problem is to replace the transmission protocol file you are using with the one from OS X 10.6.7. The back end in the CUPS system is the interface for various transmission protocols for both networking and direct connections to the printer. This problem seems to behave differently for different setups, but overall appears to be a bug with how CUPS handles its backend processes. After OS X 10.6.8 was released last Thursday, a number of people found that their printers were no longer printing, where the system would show the printers in a paused state and no print jobs would work.
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