As soon as I open a server the screen will just crash back to my start up for minecraft.

Put the summary of the bug you're having here
When I open server it goes back to the minecraft launcher and crashes so I cant get on any servers at all.
What I expected to happen was...: I don't know
Describe what you thought should happen here
It should be typical Minecraft and let me get on my server
What actually happened was...: It crashed
Describe what happened here
The screen turned grey and then sent me back to my minecraft launcher
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ... Go into multiplayer on minecraft
3. ... Try to open server