Minecraft won't launch anymore on Macbook Pro mid2012
Currently running MacOS Sierra. Minecraft was downloaded from Minecraft's website. Worked fine one day, and the next that launcher will not launch. It shows in the dock, bounces once and then disappears. Restarting the computer didn't help. Only thing that will allow me to play it to completely delete the game and all it's files and reinstall. But that only allows me to play once, as once I quit the game and shut it down, I have to restart this process all over again.
Game plays just fine otherwise, once I get it to launch.
Thanks in advance!
MacBook Pro