Custom pack crash

[Taconite_12]

Hi, i am working on setting up a custom pack for me and my friends and i ran into this crash, not quite sure how to fix it

http://paste.creeperhost.net/view/f14b5329

 

[Taconite_12]

It seems like tesla is the issue but its not even in the pack, so I'm pretty confused

 

[Quetzi]

First off, we have a Tech Support forum. Secondly, if you would like help please make sure you post the full log, not just the bits you think seem relevant.