As soon as I go to a server, for example Mineplex, the game just crashes back to my launcher.

Put the summary of the bug you're having here

*What I expected to happen was that the server connected and I was in the server.
Describe what you thought should happen here

*What actually happened was when i chose the server, it said logging in and then the minecraft window crashed. Be sure to test this on a MacBook, as that is what I use.
Describe what happened here

Steps to Reproduce:
1. First get the 1.10.1 update
2. Then TRY to get into a server, mine crashed on Mineplex
3. USE a MACBOOK