---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 11/7/15 7:10 PM
Description: Ticking entity

java.lang.ClassCastException: ahw cannot be cast to ahn
	at aqo.a(SourceFile:148)
	at aqv$a.c(SourceFile:373)
	at aym.a(SourceFile:107)
	at aym.a(SourceFile:82)
	at ayk.a(SourceFile:82)
	at ayk.a(SourceFile:40)
	at ayk.a(SourceFile:30)
	at vb.a(SourceFile:89)
	at va.a(SourceFile:53)
	at va.a(SourceFile:76)
	at vb.a(SourceFile:127)
	at to.e(SourceFile:109)
	at th.a(SourceFile:129)
	at ry.cd(SourceFile:631)
	at rx.n(SourceFile:1688)
	at ry.n(SourceFile:484)
	at yv.n(SourceFile:35)
	at zf.n(SourceFile:243)
	at rx.m(SourceFile:1550)
	at ry.m(SourceFile:275)
	at yv.m(SourceFile:40)
	at zf.m(SourceFile:299)
	at ahn.a(SourceFile:1481)
	at lq.a(SourceFile:719)
	at ahn.g(SourceFile:1459)
	at ahn.k(SourceFile:1349)
	at lq.k(SourceFile:552)
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:546)
	at bxx.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:450)
	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 --
Stacktrace:
	at aqo.a(SourceFile:148)
	at aqv$a.c(SourceFile:373)
	at aym.a(SourceFile:107)
	at aym.a(SourceFile:82)
	at ayk.a(SourceFile:82)
	at ayk.a(SourceFile:40)
	at ayk.a(SourceFile:30)
	at vb.a(SourceFile:89)
	at va.a(SourceFile:53)
	at va.a(SourceFile:76)
	at vb.a(SourceFile:127)
	at to.e(SourceFile:109)
	at th.a(SourceFile:129)
	at ry.cd(SourceFile:631)
	at rx.n(SourceFile:1688)
	at ry.n(SourceFile:484)
	at yv.n(SourceFile:35)
	at zf.n(SourceFile:243)
	at rx.m(SourceFile:1550)
	at ry.m(SourceFile:275)
	at yv.m(SourceFile:40)
	at zf.m(SourceFile:299)
	at ahn.a(SourceFile:1481)
	at lq.a(SourceFile:719)
	at ahn.g(SourceFile:1459)

-- Entity being ticked --
Details:
	Entity Type: Zombie (zf)
	Entity ID: 565
	Entity Name: Zombie
	Entity's Exact location: -282.50, 71.00, -284.30
	Entity's Block location: World: (-283,71,-285), Chunk: (at 5,4,3 in -18,-18; contains blocks -288,0,-288 to -273,255,-273), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: 0.00, -0.08, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at ahn.k(SourceFile:1349)
	at lq.k(SourceFile:552)

-- Affected level --
Details:
	Level name: MineCraftia
	All players: 1 total; [ls['TepigNinja180'/500, l='MineCraftia', x=-284.36, y=77.03, z=-257.15]]
	Chunk stats: ServerChunkCache: 309 Drop: 0
	Level seed: -3200857569343076362
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-338,67,-267), Chunk: (at 14,4,5 in -22,-17; contains blocks -352,0,-272 to -337,255,-257), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Level time: 462664 game time, 95535 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 43472 (now: false), thunder time: 2770 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:546)
	at bxx.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:450)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 15w45a
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 183112632 bytes (174 MB) / 332001280 bytes (316 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [ls['TepigNinja180'/500, l='MineCraftia', x=-284.36, y=77.03, z=-257.15]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.