I find myself unable to connect my High Sierra MacBook Air to my M4250 Cannon printer (both work fine separately). I've donwloaded and installed several drivers from https://www.canon.co.uk/support/consumer_products/products/fax__multifunctionals/inkjet/pixma_mg_series/pixma_mg4250.html?type=drivers&language=&os=mac%20os%20x. Not sure which one I should choose.

The driver named "ICA Driver 4.0.0.a" is installed successfully according to the installer, but is nowhere to be found in /Applications.

The one called "MG4200 series CUPS Printer Driver Ver. (Mac)" installs correctly it seems but when I launch it (with the printer turned on and connected to my laptop via USB cable) I always get the following error alert :

Cannot communicate with scanner for this reasons : -Scanner is turned off. -USB cable is disconnected. -Printer is in use or an error has occurred. Please check and try again. Scanner driver will be closed. 2.156.0

Rebooting does not fix the problem. Any help appreciated.

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