[[3.0.3/3.0.4] Tekkit Closes Itself]

I get the same issue when joining a server, but it doesn't always happen for me. I hope someone knows the fix to this.

[[3.0.3/3.0.4] Crashing when joining a game.]

Title: Crashing when joining a game.

Version: 3.0.3/3.0.4

OS: Windows 7 Ultimate x64 Service Pack 1

Java Version: Java 7

Description of Problem:

When I join it crashes (Sometimes it may not though)

Error Messages:

None

Error Log:

http://pastebin.com/wBJvnfVp