Can't open Minecraft

If you open Minecraft, It will keep saying "Play", And you can't open.

What I expected to happen was...:
Trying to open Minecraft 16w06a. (Or 16w05b)

What actually happened was...:
Can't open Minecraft 16w06a (or 16w05b)

Steps to Reproduce:
1.Open Minecraft Launcher
2. Click "Play" Minecraft 16w06a
3. Your Minecraft is now Can't open.