---- Minecraft Crash Report ----
// Why did you do that?

Time: 10/7/16 8:40 PM
Description: Ticking block entity

java.lang.IllegalArgumentException: Cannot get property att{name=facing, clazz=class cv, values=[down, up, north, south, west, east]} as it does not exist in ath{block=minecraft:air, properties=[]}
	at ath$a.c(SourceFile:166)
	at ata.j(SourceFile:102)
	at ata.a(SourceFile:92)
	at ata.f(SourceFile:110)
	at ata.F_(SourceFile:233)
	at ajn.k(SourceFile:1429)
	at ben.t(SourceFile:1649)
	at ben.av(SourceFile:967)
	at ben.a(SourceFile:395)
	at net.minecraft.client.main.Main.main(SourceFile:124)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
	at ath$a.c(SourceFile:166)
	at ata.j(SourceFile:102)
	at ata.a(SourceFile:92)
	at ata.f(SourceFile:110)
	at ata.F_(SourceFile:233)

-- Block entity being ticked --
Details:
	Name: minecraft:piston // ata
	Block type: ID #36 (tile.null // asz)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (-53,68,-252), Chunk: (at 11,4,4 in -4,-16; contains blocks -64,0,-256 to -49,255,-241), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Actual block type: ID #36 (tile.null // asz)
	Actual block data value: 3 / 0x3 / 0b0011
Stacktrace:
	at ajn.k(SourceFile:1429)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bpn['JohnStar128'/16, l='MpServer', x=-37.75, y=56.00, z=-253.70]]
	Chunk stats: MultiplayerChunkCache: 440, 440
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-45,4,-282), Chunk: (at 3,0,6 in -3,-18; contains blocks -48,0,-288 to -33,255,-273), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Level time: 268229 game time, 6000 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 17 total; [xm['Llama'/0, l='MpServer', x=-36.01, y=56.00, z=-315.98], xm['Llama'/1, l='MpServer', x=-31.94, y=56.00, z=-315.85], xm['Llama'/2, l='MpServer', x=-27.97, y=56.00, z=-315.80], xm['Llama'/3, l='MpServer', x=-24.03, y=56.00, z=-315.92], xm['Llama'/4, l='MpServer', x=-20.00, y=56.00, z=-315.95], xm['Llama'/5, l='MpServer', x=-11.99, y=56.00, z=-315.93], xm['Llama'/6, l='MpServer', x=-7.16, y=56.00, z=-315.83], xm['Llama'/7, l='MpServer', x=-4.00, y=56.00, z=-315.98], xm['Llama'/8, l='MpServer', x=-15.16, y=56.00, z=-315.83], xm['Llama'/9, l='MpServer', x=-0.15, y=56.00, z=-315.91], xm['Llama'/10, l='MpServer', x=4.84, y=56.00, z=-315.88], xm['Llama'/11, l='MpServer', x=8.90, y=56.00, z=-315.91], xm['Llama'/12, l='MpServer', x=11.99, y=56.00, z=-315.89], xm['Llama'/13, l='MpServer', x=15.94, y=56.00, z=-315.84], xm['Llama'/14, l='MpServer', x=20.00, y=56.00, z=-316.00], xm['Llama'/15, l='MpServer', x=24.86, y=56.00, z=-315.89], bpn['JohnStar128'/16, l='MpServer', x=-37.75, y=56.00, z=-253.70]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bnl.a(SourceFile:365)
	at ben.b(SourceFile:2536)
	at ben.a(SourceFile:404)
	at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
	Minecraft Version: 16w40a
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 155271864 bytes (148 MB) / 310906880 bytes (296 MB) up to 2134114304 bytes (2035 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 16w40a
	LWJGL: 2.9.4
	OpenGL: Intel(R) HD Graphics GL version 4.0.0 - Build 10.18.10.4425, Intel
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: 
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	CPU: 2x Intel(R) Celeron(R) CPU N2840 @ 2.16GHz