Are you on a mac computer/laptop? If you are you can do the following and it should help
if you right-click (click with 2 fingers on MacBooks) then choose open from the list it will ask if you are sure to open. click open and it should work you won't run into the problem again after doing it once
It didn't work. I am able to open it, and it launches, but the update isn't showing up at all. Like it's stuck on the old update even though I updated it when I got the notification that the update was out. I tried uninstalling and reinstalling and it still didn't do anything. :/