---- Minecraft Crash Report ----
// You're mean.

Time: 21.11.15 12:34
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot get property ari{name=level, clazz=class java.lang.Integer, values=[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]} as it does not exist in aqv{block=minecraft:air, properties=[]}
	at aqv$a.c(SourceFile:165)
	at aks.b(SourceFile:26)
	at ahn.a(SourceFile:2003)
	at avo$f.a(SourceFile:921)
	at avz.a(SourceFile:42)
	at avv.a(SourceFile:94)
	at ate.b(SourceFile:324)
	at arw.a(SourceFile:802)
	at arw.a(SourceFile:784)
	at lo.d(SourceFile:115)
	at lu.a(SourceFile:85)
	at lv.c(SourceFile:146)
	at lp.d(SourceFile:221)
	at net.minecraft.server.MinecraftServer.D(SourceFile:616)
	at net.minecraft.server.MinecraftServer.C(SourceFile:552)
	at bxx.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:456)
	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 aqv$a.c(SourceFile:165)
	at aks.b(SourceFile:26)
	at ahn.a(SourceFile:2003)
	at avo$f.a(SourceFile:921)
	at avz.a(SourceFile:42)
	at avv.a(SourceFile:94)
	at ate.b(SourceFile:324)
	at arw.a(SourceFile:802)
	at arw.a(SourceFile:784)
	at lo.d(SourceFile:115)
	at lu.a(SourceFile:85)
	at lv.c(SourceFile:146)
	at lp.d(SourceFile:221)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [lr['Unusual62'/242, l='New World', x=23,95, y=93,58, z=29999960,81]]
	Chunk stats: ServerChunkCache: 686 Drop: 0
	Level seed: -5679557665479142609
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 0 game time, 0 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:616)
	at net.minecraft.server.MinecraftServer.C(SourceFile:552)
	at bxx.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:456)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 15w47c
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 197592184 bytes (188 MB) / 616747008 bytes (588 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; [lr['Unusual62'/242, l='New World', x=23,95, y=93,58, z=29999960,81]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.