My printer somehow became uninstalled overnight, and Canon suggested that I reinstall the drivers. The actual error message is to check that the printer is connected. I repowered both comptuer and printer, changed the USB cable and repaired the permissions twice.

I downloaded the drivers but when I click on the downloaded file I get an error message that the disk image failed and the volume will not mount. No idea how to fix this and would appreciate any help.

My wife's old G4 with 10.4.11.