Added Apotheosis to modpack and when I built a mob grinder with mob spawners it crashes either immediately or after certain kills, of which I have no idea.

Forge 2815

https://paste.dimdev.org/sohemikite.mccrash

You should be able to close this (Shadows-of-Fire/Apotheosis#21), was missing a !(e instanceof FakePlayer)

Will do - I guess the' Icy something whatnot' Enchant in another MGU issue was your fault too :P