Hey, I got an issue with your mod :D
Forge Version: 14.23.4.2703
Mod Version: InGameInfoXML-1.12.2-2.8.2.94-universal.jar

ModPack used: MMD-Public-Pack - Reloaded : Version 1.0.2a

Issue:
The Server starts up and completes loading of all mods.
You try to connect to the Server, and it kicks you, without any crash, it just kicks you.

Have a Gist: https://gist.github.com/TheSpicePhantom/acf8bc6ba4513650ef3da2fc2f68908f

Can you try if the same happens with only IGI installed?