Thanks, Mark. In the elegance stakes, that solution scores zero, I'm afraid! Fortunately, by updating MP Navigator to v4.0.5 and reinstalling the IJ Network Tool in its latest version, all problems with my MG 6150 have been overcome. Took me a couple of hours to sort that out and I would have hoped for an auto-update from Canon, to be honest, but the job's done, thankfully. Hopefully this might help other sufferers.
Hi, ran into the same problem with my MX860 after I upgraded to High Sierra recently. I found the correct link to MP Navigator EX Ver. 3.1.5 (Mac) on this forum in a post from waltgoede on 1/5/18.
Here is the link: http://support-th.canon-asia.com/contents/TH/EN/0200328215.html
I installed it and everything is back to normal. I'm on a MacMini late 2012 I7 quad core. Hope it works for you!
Same. With High Sierra 10.13.1 (17B48) installed on my iMac (Retina 5K 27 inch), MP Navigator automatically quits now. I am unable to use my Canon PIXMA MX350 to scan.
Searching the Canon site for MX350 software reveals that there are no available drivers. I've been unable to find a new version of MP Navigator on the Canon site either.
Help. I have upgraded myself into obsolence.
A large company like Canon surely can be expected to stay on top of this. Right?