---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 12/28/16 10:27 PM
Description: Exception ticking world

java.lang.ClassCastException: alk cannot be cast to amp
	at ayu$c.a(SourceFile:1848)
	at ayr.a(SourceFile:42)
	at ayn.a(SourceFile:95)
	at avx.b(SourceFile:437)
	at auo.a(SourceFile:803)
	at auo.a(SourceFile:791)
	at lv.c(SourceFile:115)
	at mb.a(SourceFile:85)
	at mc.c(SourceFile:147)
	at lw.d(SourceFile:221)
	at net.minecraft.server.MinecraftServer.D(SourceFile:626)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cch.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
	at ayu$c.a(SourceFile:1848)
	at ayr.a(SourceFile:42)
	at ayn.a(SourceFile:95)
	at avx.b(SourceFile:437)
	at auo.a(SourceFile:803)
	at auo.a(SourceFile:791)
	at lv.c(SourceFile:115)
	at mb.a(SourceFile:85)
	at mc.c(SourceFile:147)
	at lw.d(SourceFile:221)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [ly['EDL1A5'/0, l='New World', x=704.21, y=70.00, z=20.53]]
	Chunk stats: ServerChunkCache: 779 Drop: 0
	Level seed: -3023133873922619757
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (236,64,212), Chunk: (at 12,4,4 in 14,13; contains blocks 224,0,208 to 239,255,223), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 177174 game time, 177174 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 1689 (now: false), thunder time: 62062 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:626)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cch.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.11.2
	Operating System: Mac OS X (x86_64) version 10.11.6
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 165128400 bytes (157 MB) / 599261184 bytes (571 MB) up to 7635730432 bytes (7282 MB)
	JVM Flags: 1 total; -Xmx8192m
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [ly['EDL1A5'/0, l='New World', x=704.21, y=70.00, z=20.53]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.