Trying to install Canon Pixma Pro-100 printer on Mac OSX 10.9.1 and having trouble. When I try to add the printer it states "The selected printer software is available from Apple. Click Add to download it and add this printer." But when I click "Add" it begins 'finding software' but ultimately tells me it "Can't install the software because it is not currently available form the Software Update server." Canon says the printer's compatible with 10.9, I've installed their latest driver, any ideas why this isn't working?