---- Minecraft Crash Report ----
// Sorry :(

Time: 3/12/15 1:43 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(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: The Walls 2 (15 mins)
	All players: 1 total; [lr['Jamzs3'/96, l='The Walls 2 (15 mins)', x=-728.90, y=73.00, z=-144.75]]
	Chunk stats: ServerChunkCache: 325 Drop: 0
	Level seed: 1615850614446281026
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-794,97,-57), Chunk: (at 6,6,7 in -50,-4; contains blocks -800,0,-64 to -785,255,-49), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
	Level time: 3143362 game time, 3143362 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 157 (now: true), thunder time: 51572 (now: false)
	Level game mode: Game mode: survival (ID 0). 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 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: 110328840 bytes (105 MB) / 265613312 bytes (253 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: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lr['Jamzs3'/96, l='The Walls 2 (15 mins)', x=-728.90, y=73.00, z=-144.75]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.