Just upgraded 2012 mac mini to macOS Sierra 10.12. Now when I try to print to a Canon MF-4500, I get an error message (filter failed). I tried resetting the printing system and re-added the networked MF-4500 but I got same error message.

  • Are you in a position where you are able to plug the printer directly into the computer? If you can, try printing that way. Does that work? – NoahL Oct 10 '16 at 1:45

Canon say that they are working on a fix. In the meantime, converting to a TIFF, removing the alpha channel and printing that works. (Just checked and it works fine for me MP640.)

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