Okay, so right now, I have 10.6.8 Snow Leopard running on my 2012 iMac. Every time I click "Get" in the App Store to download something, nothing happens. I can't download ANYTHING. This is really frustrating because I want to download Yosemite. I even went so far as to reinstall Snow Leopard to see if that would fix my App Store issue. Nope. Still nothing. It's really pissing me right off. And of course when I try to get ahold of tech support it's a bunch of bull. If ANYONE could help me out, it'd be greatly appreciated!