---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 12/2/15 2:17 PM
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(Unknown Source)


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: New World
	All players: 1 total; [lr['Malum5'/638, l='New World', x=100.53, y=224.00, z=279.66]]
	Chunk stats: ServerChunkCache: 392 Drop: 0
	Level seed: -1154601845846066934
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (196,64,252), Chunk: (at 4,4,12 in 12,15; contains blocks 192,0,240 to 207,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 17450652 game time, 17643905 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 9457 (now: true), thunder time: 39095 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
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(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 15w49a
	Operating System: Windows 8.1 (x86) version 6.3
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 122261752 bytes (116 MB) / 379359232 bytes (361 MB) up to 523501568 bytes (499 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -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['Malum5'/638, l='New World', x=100.53, y=224.00, z=279.66]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.