How can I scan from a Canon MX870 in El Capitan?
Since "up"grading to El Capitan, I also lost my ability to scan directly from my Canon MX870 printer/scanner. This used to be flawless in previous MacOS versions. Now, the menu item (Import from Scanner) in Preview is either greyed out, or I get an error message: "Cannot communicate with scanner...". The same error message appears if I use the native Canon MP Navigator App. Of course, this is ridiculous since both the scanner and the computer are on the same wireless LAN, and there is no problem PRINTING to the same device (so the Mac can clearly find it, just not for scanning purposes). HELP!? (I've already updated the driver...)
MacBook Pro with Retina display, OS X Mavericks (10.9.5), Magic Mouse