Yep, I checked Software Update. Nothing. By installation media, I guess you mean the version 2.9 package contents. If so Pacifist reveals nothing.
I've just roped Google into the mix but all I can find is a vaguely similar issue whose resolution was apparently to reset the printing system and add the printer again. I'm a bit reluctant to do this. I might wait a little to see if Apple come up with a more normal Software Update via the App Store…
The Canon website is not the only one around which is not particularly focused on a customer seeking simple unambiguous information. Australia's main telco - Telstra - is another where the idiot charged with construction of the site has clearly gone boldly forth on the Starship Enterprise to seek page design advice from a non-human in another universe.
Thanks for your attention Artie.
