Trouble logging into a multiplayer server (lemoncloud.org). Successfully logged into main lobby of server. When trying to move to a game within [lemoncloud.org], game crashed.

Put the summary of the bug you're having here

What I expected to happen was...:
Easy and successful log-in and use of specified server

What actually happened was...:
The game crashed

Steps to Reproduce:
1. Log in to minecraft
2. Go to the Multiplayer menu
3. Join server

{lemoncloud.org}

4. Click the Compass in the player toolbar
5. Select the [Lava bucket]/ Skyblock Fire
6. Game crashes here