My Canon printer (LBP6020) has stopped working since installing Sierra GM. I tried downloading the latest drivers from Canon, but in their wisdom they seem to have locked the installer to only run on "known" versions of OS X, so it refuses to run on Sierra. Have tried rooting through the PKG for the driver file but can't find it. Also tried the generic gutenprint driver, but no luck. Any advice on how I can trick the driver installer to run on Sierra? I don't fancy waiting for Canon to release an update.