Repair empty or partially filled bar under Laundpad icon in Dock

Every so often, you may notice that your LaunchPad icon has an empty or partially-filled progress bar beneath it. Here is how you can get rid of that annoying little bugger.

Open TERMINAL

Paste the following command: defaults write com.apple.dock ResetLaunchPad -bool true; killall Dock

Restart your Mac

When the system comes back up, your LaunchPad icon should no longer have the progress bar (unless you actually have an update that kick starts itself back into progressing!).