---- Minecraft Crash Report ----
// There are four lights!

Time: 26/11/14 21.54
Description: Exception ticking world

java.lang.RuntimeException: Already decorating
at arv.a(SourceFile:25)
at arj.a(SourceFile:389)
at ask.a(SourceFile:85)
at bgt.a(SourceFile:472)
at qt.a(SourceFile:174)
at bff.a(SourceFile:872)
at qt.c(SourceFile:104)
at qt.d(SourceFile:116)
at aqr.a(SourceFile:276)
at qu.h(SourceFile:327)
at qu.c(SourceFile:202)
at net.minecraft.server.MinecraftServer.A(SourceFile:600)
at net.minecraft.server.MinecraftServer.z(SourceFile:532)
at cyk.z(SourceFile:155)
at net.minecraft.server.MinecraftServer.run(SourceFile:448)
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 ask.a(SourceFile:85)
at bgt.a(SourceFile:472)
at qt.a(SourceFile:174)
at bff.a(SourceFile:872)
at qt.c(SourceFile:104)
at qt.d(SourceFile:116)
at aqr.a(SourceFile:276)
at qu.h(SourceFile:327)
at qu.c(SourceFile:202)

– Affected level –
Details:
Level name: Survival of the fittest
All players: 1 total; [qx['Elhessar'/224, l='Survival of the fittest', x=176,05, y=70,00, z=-237,84]]
Chunk stats: ServerChunkCache: 1447 Drop: 0
Level seed: -4586005650227096309
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: 248,00,64,00,192,00 - World: (248,64,192), Chunk: (at 8,4,0 in 15,12; contains blocks 240,0,192 to 255,255,207), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 294997 game time, 294997 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 68897 (now: false), thunder time: 3613 (now: true)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.A(SourceFile:600)
at net.minecraft.server.MinecraftServer.z(SourceFile:532)
at cyk.z(SourceFile:155)
at net.minecraft.server.MinecraftServer.run(SourceFile:448)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.8.1
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.7.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 2771136960 bytes (2642 MB) / 3207856128 bytes (3059 MB) up to 3207856128 bytes (3059 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Xmx3072M -Xms3072M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [qx['Elhessar'/224, l='Survival of the fittest', x=176,05, y=70,00, z=-237,84]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.