Hi, I apologise profusely if this is something that's already been covered on the forum, but I ran a quick search and couldn't find any threads on it so I was just wondering if someone could give me a bit of help? I'm kind of stuck on the Yosemite PB 2. My Mac keeps reminding me to update with a notification, yet when I click to install the updates immediately it puts me into the Mac App Store with this drop down: Yet, when I click 'Show Details' it does absolutely nothing. And if I click the 'Update' or 'Update All' button in the Store, then the whole process just repeats itself. It's incredibly frustrating and I'm not sure what to do. I have more than enough disk space for the damn update (unless 300GB+ is too little), I've restarted my computer multiple times hoping that would make it work to no avail, so I'm a bit stuck. Does anyone have an idea on how to fix this? Because I'm completely mystified, so any help would be deeply appreciated.