Server crash

[linuxfan1]

I made a modpack called Tekis, Me and my friend are trying to make a server, and im getting this crash-log

http://pastebin.com/v2jDb7Ud

unfortunately, I dont know whats going on, and my friend dosent know anything about computers.
Thanks

~linuxfan1  

[EvilOwl]

You obviously have a client side mod on the server.

I don't know which one is it but I do now Mob Dismemberment is client-side only. It should be removed from the server.

Get it out of there and recheck the server.

[linuxfan1]

Thank you I will remove it tonight