Minecraft Crash Report

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 16/10/14 4:25 PM
Description: Exception ticking world

java.lang.RuntimeException: Already decorating
	at arv.a(SourceFile:25)
	at arj.a(SourceFile:389)
	at asf.a(SourceFile:59)
	at bgt.a(SourceFile:472)
	at qt.a(SourceFile:174)
	at bff.a(SourceFile:854)
	at qt.c(SourceFile:104)
	at qt.d(SourceFile:116)
	at aqr.a(SourceFile:276)
	at aqr.f(SourceFile:272)
	at aqr.a(SourceFile:288)
	at bhn.a(SourceFile:41)
	at bhb.a(SourceFile:179)
	at bhb.d(SourceFile:244)
	at bhb.b(SourceFile:312)
	at arv.a(SourceFile:125)
	at arv.a(SourceFile:49)
	at arj.a(SourceFile:389)
	at asf.a(SourceFile:59)
	at bgt.a(SourceFile:472)
	at qt.a(SourceFile:174)
	at bff.a(SourceFile:854)
	at qt.c(SourceFile:104)
	at qt.d(SourceFile:116)
	at aqr.a(SourceFile:276)
	at aqr.f(SourceFile:272)
	at aqr.p(SourceFile:657)
	at awk.b(SourceFile:66)
	at ato.a(SourceFile:445)
	at qu.h(SourceFile:384)
	at qu.c(SourceFile:202)
	at net.minecraft.server.MinecraftServer.A(SourceFile:601)
	at net.minecraft.server.MinecraftServer.z(SourceFile:533)
	at cyk.z(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:449)
	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 arv.a(SourceFile:25)
	at arj.a(SourceFile:389)
	at asf.a(SourceFile:59)
	at bgt.a(SourceFile:472)
	at qt.a(SourceFile:174)
	at bff.a(SourceFile:854)
	at qt.c(SourceFile:104)
	at qt.d(SourceFile:116)
	at aqr.a(SourceFile:276)
	at aqr.f(SourceFile:272)
	at aqr.a(SourceFile:288)
	at bhn.a(SourceFile:41)
	at bhb.a(SourceFile:179)
	at bhb.d(SourceFile:244)
	at bhb.b(SourceFile:312)
	at arv.a(SourceFile:125)
	at arv.a(SourceFile:49)
	at arj.a(SourceFile:389)
	at asf.a(SourceFile:59)
	at bgt.a(SourceFile:472)
	at qt.a(SourceFile:174)
	at bff.a(SourceFile:854)
	at qt.c(SourceFile:104)
	at qt.d(SourceFile:116)
	at aqr.a(SourceFile:276)
	at aqr.f(SourceFile:272)
	at aqr.p(SourceFile:657)
	at awk.b(SourceFile:66)
	at ato.a(SourceFile:445)
	at qu.h(SourceFile:384)
	at qu.c(SourceFile:202)

-- Affected level --
Details:
	Level name: 1.8 pre 2
	All players: 1 total; [qx['coolfire155'/152, l='1.8 pre 2', x=-18.79, y=98.79, z=222.73]]
	Chunk stats: ServerChunkCache: 737 Drop: 0
	Level seed: -8120645309706090753
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: -52.00,64.00,252.00 - World: (-52,64,252), Chunk: (at 12,4,12 in -4,15; contains blocks -64,0,240 to -49,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 699 game time, 699 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 76185 (now: false), thunder time: 165573 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.A(SourceFile:601)
	at net.minecraft.server.MinecraftServer.z(SourceFile:533)
	at cyk.z(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:449)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.8.1-pre2
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.7.0_67, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 206144224 bytes (196 MB) / 507568128 bytes (484 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; [qx['coolfire155'/152, l='1.8 pre 2', x=-18.79, y=98.79, z=222.73]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

Operating System: Windows 8

Latest Java Version
Graphics Card: AMD Radeon HD 8570