---- Minecraft Crash Report ----
// My bad.

Time: 10/11/16 12:52 AM
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: (455,69,-523), Chunk: (at 7,4,5 in 28,-33; contains blocks 448,0,-528 to 463,255,-513), Region: (0,-2; contains chunks 0,-64 to 31,-33, blocks 0,0,-1024 to 511,255,-513)
	Actual block type: ID #36 (tile.null // asz)
	Actual block data value: 9 / 0x9 / 0b1001
Stacktrace:
	at ajn.k(SourceFile:1429)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bpn['masontheman14'/22, l='MpServer', x=462.44, y=67.53, z=-519.14]]
	Chunk stats: MultiplayerChunkCache: 576, 576
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (460,4,-543), Chunk: (at 12,0,1 in 28,-34; contains blocks 448,0,-544 to 463,255,-529), Region: (0,-2; contains chunks 0,-64 to 31,-33, blocks 0,0,-1024 to 511,255,-513)
	Level time: 39804 game time, 39804 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: true), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 13 total; [wt['Chicken'/6, l='MpServer', x=459.30, y=64.00, z=-449.74], xb['Sheep'/9, l='MpServer', x=462.50, y=64.00, z=-438.50], wq['Bat'/11, l='MpServer', x=465.25, y=62.10, z=-549.41], wq['Bat'/12, l='MpServer', x=469.58, y=62.10, z=-549.25], wq['Bat'/13, l='MpServer', x=470.75, y=62.10, z=-550.75], wu['Cow'/14, l='MpServer', x=464.42, y=64.00, z=-449.15], wt['Chicken'/15, l='MpServer', x=499.89, y=64.00, z=-496.38], wt['Chicken'/16, l='MpServer', x=495.09, y=64.00, z=-497.11], wt['Chicken'/17, l='MpServer', x=498.99, y=64.00, z=-483.99], wt['Chicken'/18, l='MpServer', x=498.54, y=64.00, z=-483.54], zf['item.item.egg'/20, l='MpServer', x=501.62, y=64.00, z=-488.08], zf['item.item.egg'/21, l='MpServer', x=502.39, y=64.00, z=-485.61], bpn['masontheman14'/22, l='MpServer', x=462.44, y=67.53, z=-519.14]]
	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 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 153411224 bytes (146 MB) / 334082048 bytes (318 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
	Launched Version: 16w40a
	LWJGL: 2.9.4
	OpenGL: Intel(R) HD Graphics 4600 GL version 4.3.0 - Build 20.19.15.4474, 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: 8x Intel(R) Core(TM) i7-4720HQ CPU @ 2.60GHz