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

Time: 02/12/15 11:53 AM
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot get property arh{name=half, clazz=class als$a, values=[top, bottom]} as it does not exist in aqv{block=minecraft:double_wooden_slab, properties=[variant]}
	at aqv$a.c(SourceFile:165)
	at als.k(SourceFile:50)
	at aqv$a.q(SourceFile:388)
	at ahu.a(SourceFile:203)
	at ahu.a(SourceFile:132)
	at lp.d(SourceFile:198)
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bxz.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	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$a.c(SourceFile:165)
	at als.k(SourceFile:50)
	at aqv$a.q(SourceFile:388)
	at ahu.a(SourceFile:203)
	at ahu.a(SourceFile:132)
	at lp.d(SourceFile:198)

-- Affected level --
Details:
	Level name: TreeTest
	All players: 1 total; [lr['zobrux'/35, l='TreeTest', x=422.61, y=69.00, z=1002.83]]
	Chunk stats: ServerChunkCache: 521 Drop: 0
	Level seed: 7845848935939289014
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 3;minecraft:bedrock,62*minecraft:dirt,minecraft:grass;1;
	Level spawn location: World: (386,4,1113), Chunk: (at 2,0,9 in 24,69; contains blocks 384,0,1104 to 399,255,1119), Region: (0,2; contains chunks 0,64 to 31,95, blocks 0,0,1024 to 511,255,1535)
	Level time: 1162663 game time, 6000 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bxz.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 15w49a
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 505681136 bytes (482 MB) / 743964672 bytes (709 MB) up to 3817865216 bytes (3641 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lr['zobrux'/35, l='TreeTest', x=422.61, y=69.00, z=1002.83]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.