Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking player
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:194)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:787)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:665)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: net.minecraft.entity.player.EntityPlayerMP cannot be cast to net.minecraft.entity.EntityLiving
at ipsis.woot.enchantment.EnchantmentHeadhunter.handleLivingDrops(EnchantmentHeadhunter.java:98)
at ipsis.woot.event.HandlerLivingDropsEvent.onLivingDropsEvent(HandlerLivingDropsEvent.java:15)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1564_HandlerLivingDropsEvent_onLivingDropsEvent_LivingDropsEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
at net.minecraft.entity.player.EntityPlayerMP.func_70645_a(EntityPlayerMP.java:510)
at net.minecraft.entity.EntityLivingBase.func_70097_a(EntityLivingBase.java:1014)
at net.minecraft.entity.player.EntityPlayer.func_70097_a(EntityPlayer.java:1038)
at net.minecraft.entity.player.EntityPlayerMP.func_70097_a(EntityPlayerMP.java:645)
at crazypants.enderzoo.entity.EntityDireSlime.func_70100_b_(EntityDireSlime.java:193)
at net.minecraft.entity.player.EntityPlayer.func_71044_o(EntityPlayer.java:600)
at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:571)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2167)
at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:234)
at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:382)
at net.minecraft.network.NetHandlerPlayServer.func_73660_a(NetHandlerPlayServer.java:173)
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:209)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:285)
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:179)
... 5 more

Minecraft Version: 1.12.2
Woot Version: 0.0.1

looks like a duplicate of #250
Think the way to replicate is to die since the moment I died the game crashed with the error

Same bug, but this certainly pointed at the player death being the problem, which made it much easier to replicate. I'll close this one as duplicate and fix against #250.
Thanks for the extra debug info.

I pretty much screwed that piece of code up. The trace looks like the same casting problem. I'll try and get that fixed quickly and push a new release as soon as possible.