Server Crash

Put the summary of the bug you're having here

What I expected to happen was...:
The server would run without interruption.

What actually happened was...:
It crashed hard less than 60 seconds after I logged in.

Steps to Reproduce:
1. Using McMyAdmin - Start server via CLI
2. Log in using latest released Minecraft launcher from Windows 8.1
3. Watching ssh session of Minecraft Server, crash
4. Game slowly locks up until either freeze and force quit or errors back to launcher.