Since upgrading to El Cap, I can’t get my Air laptop to print to my Canon MG5350 printer. The Canon is connected to my desktop Mini with USB, and the Air has always connected to it on the wireless network. The Mini connects to the Canon perfectly and prints. I’ve tried most things I can think of, including re-adding the printer to the Printers & Scanners sheet on the Air. The Sharing prefs on the Mini all seem OK. It seems to get part of the way there: the Printer Proxy sheet on the Air shows it ‘Looking for printer’, then ‘Connecting to printer’, and then ... nothing happens. Any ideas?