Versions:

Related module: Tweaks; dyeable minecarts.
Mod version: Built from source, latest commit: 8be6262 - view
Forge version: 1.11-13.19.1.2188

Details:

Crash to desktop when right-clicking a fairy light chain in-world.
Occurs with and without an item in the players hand.

Mod: Fairy Lights
Crash report: gist/crash-2016-12-13_20.38.07-client