ArmorPlus Version:
1.9.4-4.1.7.1

MinecraftForge Version:
build 2018

Client or Server?:

• Client
• Server

Crash Report (via. Pastebin):
https://gist.github.com/e676048621890b907cc08ed5de92397e

fml server latest:
https://gist.github.com/eb1ebf961bbd72424974e333e966febf

What happens / happened?:
started server with your update

How can I reproduce it?:
start server again

Fixed in version 1.9.4-4.1.7.2

Fixed on 1.9.4-4.1.7.2 (Waiting for curse to approve it)
thanks for the reports :D