I was installing Yosemite Beta, however, I paused the download as I have not backup my Mac. Does anyone know how I can delete the paused download of it? It's driving me nuts! I can't just press "delete" like my other Apps!
There are two simpler ways for this:
In Mac App Store Updates page, simply hold down option, and you'll see the Pause button changes to Cancel.
In Launchpad, hold down option and you'll see apps icons begin to wiggle (just like they would on iOS). Click the X that has appeared and the update will be canceled.
Best way to do this is to enable the Debug menu for the App Store. Do this:
Run this command from Terminal:
defaults write com.apple.appstore ShowDebugMenu -bool true && killall App\ Store
Go to the the App Store debug menu and reveal the download folder. You can delete the whole thing from Finder.
Log out and back in to your Mac.
Empty the trash.