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

Time: 7/9/14 6:22 PM
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot set property bck{name=facing, clazz=class ei, values=[down, up, north, south, west, east]} to null on block minecraft:piston_extension, it is not an allowed value
	at bbw.a(SourceFile:103)
	at bbn.b(SourceFile:208)
	at bbi.a(SourceFile:365)
	at bbi.a(SourceFile:152)
	at qg.a(SourceFile:853)
	at qg.aj(SourceFile:842)
	at qg.c(SourceFile:214)
	at net.minecraft.server.MinecraftServer.x(SourceFile:578)
	at net.minecraft.server.MinecraftServer.w(SourceFile:510)
	at cwg.w(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:426)
	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 bbw.a(SourceFile:103)
	at bbn.b(SourceFile:208)
	at bbi.a(SourceFile:365)
	at bbi.a(SourceFile:152)
	at qg.a(SourceFile:853)
	at qg.aj(SourceFile:842)
	at qg.c(SourceFile:214)

-- Affected level --
Details:
	Level name: Bug Tests 3 - Snapshot
	All players: 1 total; [qj['banana478'/19, l='Bug Tests 3 - Snapshot', x=-8.88, y=54.00, z=27.79]]
	Chunk stats: ServerChunkCache: 305 Drop: 0
	Level seed: -209464807314736502
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 3;minecraft:bedrock,52*minecraft:sandstone;2;
	Level spawn location: 0.00,53.00,0.00 - World: (0,53,0), Chunk: (at 0,3,0 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: 118173 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.x(SourceFile:578)
	at net.minecraft.server.MinecraftServer.w(SourceFile:510)
	at cwg.w(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:426)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 14w28a
	Operating System: Linux (amd64) version 3.13.0-30-generic
	Java Version: 1.7.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 167190864 bytes (159 MB) / 532152320 bytes (507 MB) up to 954728448 bytes (910 MB)
	JVM Flags: 1 total; -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [qj['banana478'/19, l='Bug Tests 3 - Snapshot', x=-8.88, y=54.00, z=27.79]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.