Exactly as the title said. I killed a Creeperling from another mod first and nothing went wrong. I checked the book and it said I had to kill an undead mob to get the gem drop, so I killed a skeleton, and I crashed when the skeleton died.

To reproduce, I guess kill a skeleton with the scythe? I'm not entirely sure.

I am using Eidolon 0.2.7 as part of a custom modpack.

I did not get a crash report from the crash, so I am attaching the full game log.

The crash just shut down the game, not the full crash process, and did not produce a proper crash log. However, this is the full game log, if that is helpful.

https://gist.github.com/SPYROHAWK/dfd3c502effea3f434b63e508c3b2bed