---- Minecraft Crash Report ----
// I let you down. Sorry :(

Time: 15/11/15 23:43
Description: Exception while updating neighbours

java.lang.IllegalArgumentException: Cannot get property arg{name=shape, clazz=class ajh$b, values=[north_south, east_west, ascending_east, ascending_west, ascending_north, ascending_south]} as it does not exist in aqu{block=minecraft:stone_button, properties=[facing, powered]}
	at aqu$a.c(SourceFile:165)
	at ane.a(SourceFile:115)
	at ane.a(SourceFile:102)
	at ane.b(SourceFile:136)
	at ajh.a(SourceFile:454)
	at ahm.e(SourceFile:447)
	at ahm.d(SourceFile:414)
	at ajr.c(SourceFile:274)
	at ajr.b(SourceFile:224)
	at lp.a(SourceFile:646)
	at lp.d(SourceFile:215)
	at net.minecraft.server.MinecraftServer.D(SourceFile:616)
	at net.minecraft.server.MinecraftServer.C(SourceFile:552)
	at bxw.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:456)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
	at aqu$a.c(SourceFile:165)
	at ane.a(SourceFile:115)
	at ane.a(SourceFile:102)
	at ane.b(SourceFile:136)
	at ajh.a(SourceFile:454)

-- Block being updated --
Details:
	Source block type: ID #77 (tile.button // aoq)
	Block: minecraft:activator_rail[powered=true,shape=north_south]
	Block location: World: (2357,5,951), Chunk: (at 5,0,7 in 147,59; contains blocks 2352,0,944 to 2367,255,959), Region: (4,1; contains chunks 128,32 to 159,63, blocks 2048,0,512 to 2559,255,1023)
Stacktrace:
	at ahm.e(SourceFile:447)
	at ahm.d(SourceFile:414)
	at ajr.c(SourceFile:274)
	at ajr.b(SourceFile:224)

-- Block being ticked --
Details:
	Block: minecraft:stone_button[facing=south,powered=true]
	Block location: World: (2357,4,952), Chunk: (at 5,0,8 in 147,59; contains blocks 2352,0,944 to 2367,255,959), Region: (4,1; contains chunks 128,32 to 159,63, blocks 2048,0,512 to 2559,255,1023)
Stacktrace:
	at lp.a(SourceFile:646)
	at lp.d(SourceFile:215)

-- Affected level --
Details:
	Level name: New World BLEH
	All players: 1 total; [lr['RobuxShooters'/96115, l='New World BLEH', x=2355.00, y=4.00, z=953.63]]
	Chunk stats: ServerChunkCache: 697 Drop: 0
	Level seed: -1116875900132149470
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 
	Level spawn location: World: (1492,4,1246), Chunk: (at 4,0,14 in 93,77; contains blocks 1488,0,1232 to 1503,255,1247), Region: (2,2; contains chunks 64,64 to 95,95, blocks 1024,0,1024 to 1535,255,1535)
	Level time: 38769 game time, 19877 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 100054 (now: false), thunder time: 63598 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:616)
	at net.minecraft.server.MinecraftServer.C(SourceFile:552)
	at bxw.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:456)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 15w46a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_66, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 184291808 bytes (175 MB) / 393265152 bytes (375 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
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lr['RobuxShooters'/96115, l='New World BLEH', x=2355.00, y=4.00, z=953.63]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.