When I click play on Launcher, it closes, then opens again, and I have tried uninstall and then reinstalling- that does not work.

Put the summary of the bug you're having here

*What I expected to happen was I click play, and I get to play Minecraft.
Describe what you thought should happen here

*What actually happened was Launcher closed and appeared again, not letting me play.
Describe what happened here

Steps to Reproduce:
1. Click Minecraft
2. Click Play
3. Bug happens