Hopper: java.lang.IllegalArgumentException: Cannot get property atw{name=facing, clazz=class cv, values=[down, up, north, south, west, east]} as it does not exist in atk{block=minecraft:<block>, properties=[]}

java.lang.IllegalArgumentException: Cannot get property atw{name=facing, clazz=class cv, values=[down, up, north, south, west, east]} as it does not exist in atk{block=minecraft:air, properties=[]}
	at atk$a.c(SourceFile:166)
	at atd.j(SourceFile:119)
	at atd.f(SourceFile:130)
	at atd.F_(SourceFile:308)
	at ajq.k(SourceFile:1484)
	at beq.t(SourceFile:1649)
	at beq.av(SourceFile:967)
	at beq.a(SourceFile:395)
	at net.minecraft.client.main.Main.main(SourceFile:124)

---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 11/14/16 5:33 PM
Description: Ticking block entity

java.lang.IllegalArgumentException: Cannot get property atw{name=facing, clazz=class cv, values=[down, up, north, south, west, east]} as it does not exist in atk{block=minecraft:redstone_block, properties=[]}
	at atk$a.c(SourceFile:166)
	at atd.j(SourceFile:119)
	at atd.f(SourceFile:130)
	at atd.F_(SourceFile:308)
	at ajq.k(SourceFile:1484)
	at beq.t(SourceFile:1649)
	at beq.av(SourceFile:967)
	at beq.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 atk$a.c(SourceFile:166)
	at atd.j(SourceFile:119)
	at atd.f(SourceFile:130)
	at atd.F_(SourceFile:308)

-- Block entity being ticked --
Details:
	Name: minecraft:piston // atd
	Block type: ID #36 (tile.null // atc)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (-613,64,-179), Chunk: (at 11,4,13 in -39,-12; contains blocks -624,0,-192 to -609,255,-177), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
	Actual block type: ID #36 (tile.null // atc)
	Actual block data value: 2 / 0x2 / 0b0010
Stacktrace:
	at ajq.k(SourceFile:1484)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bpq['TheBentSpoon'/3, l='MpServer', x=-676.17, y=58.49, z=-164.52]]
	Chunk stats: MultiplayerChunkCache: 625, 625
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-598,64,-224), Chunk: (at 10,4,0 in -38,-14; contains blocks -608,0,-224 to -593,255,-209), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
	Level time: 1698860 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: 104 total; [zh['Falling Block'/0, l='MpServer', x=-641.50, y=59.50, z=-225.50], acd['entity.MinecartRideable.name'/1, l='MpServer', x=-609.50, y=59.00, z=-190.07], bpq['TheBentSpoon'/3, l='MpServer', x=-676.17, y=58.49, z=-164.52], acd['entity.MinecartRideable.name'/112, l='MpServer', x=-672.91, y=56.00, z=-166.89], acd['entity.MinecartRideable.name'/113, l='MpServer', x=-672.91, y=56.00, z=-166.89], acd['entity.MinecartRideable.name'/114, l='MpServer', x=-672.91, y=56.00, z=-166.89], acd['entity.MinecartRideable.name'/115, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/116, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/117, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/118, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/119, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/120, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/121, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/122, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/123, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/124, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/125, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/126, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/127, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/128, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/129, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/130, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/131, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/132, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/133, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/134, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/135, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/136, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/137, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/138, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/139, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/140, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/141, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/142, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/143, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/144, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/145, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/146, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/147, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/148, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/149, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/150, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/151, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/152, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/153, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/154, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/155, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/156, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/157, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/158, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/159, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/160, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/161, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/162, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/163, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/164, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/165, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/166, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/167, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/168, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/169, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/170, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/171, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/172, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/173, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/174, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/175, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/176, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/177, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/178, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/179, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/180, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/181, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/182, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/183, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/184, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/185, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/186, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/187, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/188, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/189, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/190, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/191, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/192, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/193, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/194, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/195, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/196, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/197, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/198, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/199, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/200, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/201, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/202, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/203, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/204, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/205, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/206, l='MpServer', x=-673.51, y=56.00, z=-166.29], acd['entity.MinecartRideable.name'/207, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/208, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/209, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/210, l='MpServer', x=-673.31, y=56.00, z=-166.49], acd['entity.MinecartRideable.name'/211, l='MpServer', x=-673.11, y=56.00, z=-166.69], acd['entity.MinecartRideable.name'/212, l='MpServer', x=-673.11, y=56.00, z=-166.69]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bno.a(SourceFile:365)
	at beq.b(SourceFile:2536)
	at beq.a(SourceFile:404)
	at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
	Minecraft Version: 1.11
	Operating System: Mac OS X (x86_64) version 10.12.1
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 311561160 bytes (297 MB) / 695205888 bytes (663 MB) up to 3817865216 bytes (3641 MB)
	JVM Flags: 1 total; -Xmx4G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.11
	LWJGL: 2.9.2
	OpenGL: AMD Radeon R9 M370X OpenGL Engine GL version 2.1 ATI-1.46.22, ATI Technologies Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object 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: Faithful 1.10.2 (incompatible), CodeCrafted Custom 1_9 (incompatible), 1.11 INFINITUDE Redstone Dust Power 3D 64px.zip
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	CPU: 8x Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz