Hi, Have a retina MBP and just bought office for mac 2011. The resolution looks like crap on word. So I was trying to follow this: http://rdfsg.blogspot.ca/2012/06/iwork-pagesmacbook-pro-retina-display.html I hit "Get Info" and it brings up the typical screen. I see that "Open in Low Resolution" is clicked, but its greyed out where I can't unclick it, click "Locked", or unclick "Hide Extension". How do I make it so I can change that?