[ubuntu] Canon MP550 won't install

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http://ubuntuforums.org – I'm trying to set up my Canon MP550 printer to an Ubuntu 12.04 64-bit desktop (using Gnome3). But it simply refuses to work! I have tried installing drivers from the apt repository, and I have tried installing the drivers that I downloaded directly from the canon website using dpkg --force-architecture --force-depends etc... Both methods install the drivers perfectly fine. except when I go to settings > printers > add new printer > local printer > mp550 series and click OK, nothing happens! it just simply doesn't add it to the list of available printers. I know connection is (Hardware)