Exit Code -1: Game Ended With bad State

Whenever I try to talk in the chat, the game crashes with the exit code of -1. I have windows 7, have the 64-bit version of java and have java 7(I know that my computer is 64-bit). It doesn't crash when I type in commands though. This happens on every server. This also happens when I am on the 100% vanilla version of Minecraft.