Spawning Villagers/Quests sometimes crash Minecraft

[BritishMindslave]

Hello! First off, I absolutely love this mod.
I'm currently running a LAN server with my sister, and sometimes when one of us spawns in a villager or completes a quest, it crashes the game for the person who completes the action. Since I host the server, and we had an issue previously where she sent mail and got a villager it crashed, we decided I will be the only one sending the mail, etc.
It only happens sometimes, and it states "Concurrent Mod Exception"?
When I load up again, whatever it was I was doing has been completed, but it's kind of an annoying crash. LOL I hate having to load up MC again.

Attached is the crash file for the most recent one!
crash-2016-09-16_11.05.12-server.txt

[Ristellise]

huh strange... seems like a generic minecraft crash. (Ie : not releated to any mod)... try updatjng forge?

[BritishMindslave]

I was playing today and the same thing happened, I updated Forge to the latest client.
This has only ever happened when interacting with VillageBox villagers. ;u;
With this one, my sister was trading Shears to a villager for a quest.
crash-2016-09-17_13.21.14-server.txt

[ckhgame]

Sorry for the very late reply..... finally I have time to keep working on this mod.... I will do an investigation on the problem. Thank you both!

[a-frenzy]

getting a similar server crash,
turning in banker quest - https://gist.github.com/frenzye/4f63591df59d2c7ffe6ca0911ed8cb80

turning in a quest https://gist.github.com/frenzye/d7e28dbbfcda192cbe623c84926961b3