Can't scan wirelessly from Canon Pixma MX892
I'm on the latest OS X 10.8.2. I can scan wirelesly at home with no problems from my HP OfficeJet 6900 series. I just open up the Preview app, choose File > Import from Scanner and away I go.
But I just bought a new Canon Pixma MX892 that claims to scan wirelessly. I've printed wirelessly with no problems from the Canon printer. But when I want to scan a document, I open the Preview app and the option to Import from Scanner is grey and I'm not able to select it.
I went to the Canon website and found the scanner drivers and installed those. But it still doesn't work.
I'm stuck. Help!
MacBook Air, OS X Mountain Lion (10.8.2)