iMovie update stuck with phantom app
So thank you to @GeorgeGarside for helping me understand where the problem would lie I was able to find an informative article on correcting the problem


Go to the Finder.
Hold down the Option key and click on the the Go menu.
Select Library.
Look for the Application Support folder. Open it.
Look for the Dock folder. Open it.
Locate files ending in ".db". Drag them into the Trash.
Go to the  menu and select Restart (or log out if preferred).
Click on the Restart button (or log out).


Source: http://www.imore.com/how-reset-launchpad-mavericks