I added the mod and started a new world on my server, and keeps crashing from the start.
I have no issues with it on my own PC in single player.
Server log while trying to start new world
latest.log

trying to load client EntityModelLayer class on server.

Ill look into it, dont know where the issue is even though i know what it is, might take a lil bit

This wasn't a very good issue report as it didn't include version numbers.
This Issue is relevant for Guard Villagers 1.0.1

This issue has been resolved with version 1.0.2
This should be marked closed.