How to Fix a Stuck Progress Bar in Dock - Mac OS X Yosemite/El Capitan
Terminal command:
defaults write com.apple.dock ResetLaunchPad -bool true; killall Dock . Apologies for the pronunciation of Yosemite, didn't know any better as a kiwi. I've since corrected my ways :) If this video helps you out, leave a like and sub!