---- Minecraft Crash Report ----
// Don't do that.

Time: 11/7/15 7:50 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:127)
	at aym.a(SourceFile:81)
	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 to.a(SourceFile:50)
	at th.a(SourceFile:94)
	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(Unknown Source)


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:127)
	at aym.a(SourceFile:81)
	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 to.a(SourceFile:50)
	at th.a(SourceFile:94)
	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: 4783
	Entity Name: Zombie
	Entity's Exact location: -389.30, 22.00, -2106.70
	Entity's Block location: World: (-390,22,-2107), Chunk: (at 10,1,5 in -25,-132; contains blocks -400,0,-2112 to -385,255,-2097), Region: (-1,-5; contains chunks -32,-160 to -1,-129, blocks -512,0,-2560 to -1,255,-2049)
	Entity's Momentum: 0.44, -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: 3/21/15
	All players: 1 total; [ls['xantar2482'/90, l='3/21/15', x=-392.70, y=21.00, z=-2105.81]]
	Chunk stats: ServerChunkCache: 724 Drop: 0
	Level seed: 12595221
	Level generator: ID 04 - customized, ver 0. Features enabled: true
	Level generator options: {"coordinateScale":684.412,"heightScale":684.412,"lowerLimitScale":512.0,"upperLimitScale":512.0,"depthNoiseScaleX":200.0,"depthNoiseScaleZ":200.0,"depthNoiseScaleExponent":0.5,"mainNoiseScaleX":80.0,"mainNoiseScaleY":160.0,"mainNoiseScaleZ":80.0,"baseSize":8.5,"stretchY":12.0,"biomeDepthWeight":1.0,"biomeDepthOffset":0.0,"biomeScaleWeight":1.0,"biomeScaleOffset":0.0,"seaLevel":63,"useCaves":true,"useDungeons":true,"dungeonChance":21,"useStrongholds":true,"useVillages":true,"useMineShafts":true,"useTemples":true,"useMonuments":true,"useRavines":true,"useWaterLakes":true,"waterLakeChance":4,"useLavaLakes":true,"lavaLakeChance":80,"useLavaOceans":false,"fixedBiome":-1,"biomeSize":4,"riverSize":4,"dirtSize":33,"dirtCount":10,"dirtMinHeight":0,"dirtMaxHeight":256,"gravelSize":33,"gravelCount":8,"gravelMinHeight":0,"gravelMaxHeight":256,"graniteSize":33,"graniteCount":10,"graniteMinHeight":0,"graniteMaxHeight":80,"dioriteSize":33,"dioriteCount":10,"dioriteMinHeight":0,"dioriteMaxHeight":80,"andesiteSize":33,"andesiteCount":10,"andesiteMinHeight":0,"andesiteMaxHeight":80,"coalSize":17,"coalCount":20,"coalMinHeight":0,"coalMaxHeight":128,"ironSize":9,"ironCount":20,"ironMinHeight":0,"ironMaxHeight":64,"goldSize":20,"goldCount":2,"goldMinHeight":0,"goldMaxHeight":32,"redstoneSize":15,"redstoneCount":8,"redstoneMinHeight":0,"redstoneMaxHeight":16,"diamondSize":19,"diamondCount":1,"diamondMinHeight":0,"diamondMaxHeight":16,"lapisSize":7,"lapisCount":1,"lapisCenterHeight":16,"lapisSpread":16}
	Level spawn location: World: (136,64,252), Chunk: (at 8,4,12 in 8,15; contains blocks 128,0,240 to 143,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 14113859 game time, 15175018 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 13032 (now: true), thunder time: 86314 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
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(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 15w45a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 193961016 bytes (184 MB) / 736100352 bytes (702 MB) up to 1431830528 bytes (1365 MB)
	JVM Flags: 1 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [ls['xantar2482'/90, l='3/21/15', x=-392.70, y=21.00, z=-2105.81]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.