---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 02/12/15 11:51 AM
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot get property arh{name=half, clazz=class als$a, values=[top, bottom]} as it does not exist in aqv{block=minecraft:double_stone_slab, properties=[seamless, variant]}
	at aqv$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: CommandBlocks
	All players: 1 total; [lr['zobrux'/78, l='CommandBlocks', x=-1378.47, y=86.39, z=-799.21]]
	Chunk stats: ServerChunkCache: 475 Drop: 0
	Level seed: -6165706213571285564
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 3;minecraft:bedrock,59*minecraft:stone,2*minecraft:dirt,minecraft:dirt:2;1;village
	Level spawn location: World: (-1400,63,-863), Chunk: (at 8,3,1 in -88,-54; contains blocks -1408,0,-864 to -1393,255,-849), Region: (-3,-2; contains chunks -96,-64 to -65,-33, blocks -1536,0,-1024 to -1025,255,-513)
	Level time: 4686548 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: 513196552 bytes (489 MB) / 793772032 bytes (757 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'/78, l='CommandBlocks', x=-1378.47, y=86.39, z=-799.21]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.