wouldn't let me get on a world or a server

Put the summary of the bug you're having here
I logged on to minecraft and wouldn't let me play single player or servers
wouldn't let me on a world
Describe what you thought should happen here
me logging on and playing mineplex,hive,etc. and me playing survival and creative
*What actually happened was...:me logging on and not letting me play survival,creative single player and not letting me play servers
Describe what happened here

Steps to Reproduce:
1. get on minecraft
2. ...go to servers or single player
3. ...click on a server or single player world.