Server Elitemobs, string error.

[Rogue]

Hi guys, there seems to be an string error. When playing on my server.
I've copied over the elite mobs mod. But when I die by some of the new mobs. It gives me a string error in chat "killed by unknown mob' elitemobs."
The description of the mob is fine. When running around. Its just when you die.

 

[LeoMC]

That is something the mod author should fix.