Log: https://paste.dimdev.org/getikogine.mccrash

How to reproduce: tie a leash to a fence, then tie another fence and right click the knot that was placed second to crash, it's fine if you only untie from the first knot.

Here's an update: it broke my save file, I can't load in without crashing.

I am writing a more detailed issue right now to help aid Vazkii, i'll post the issue below.

Meanwhile; I recommend using the mod "SpongeForge 7.16" as it actually appears to stop this event crashing and taking place.