Steps to Reproduce the Crash

Crash upon starting a new world

Mod Pack URL (Optional)

ATM9

Mod Pack Version (Optional)

No response

Extra Notes (Optional)

No response

Crash Report

https://gist.github.com/darrenh2/31ee7203b89166f8b00492d55ea236fe

Thanks for the report!
I need some more information to solve this issue, please paste your full fml-client-latest.log or latest.log to https://gist.github.com and link it here.