Ive tried to Login on My minecraft acount xXitz_NickXx On 1.7.5 for the game GunGame on us.shotbow.net and when i try to login to us.shotbow.net my minecraft crashes

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...log on to minecraft using 1.7.5
3. ...go on the server us.shotbow.net
4... it will crash your Minecraft