---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 13.09.13 13:56
Description: Exception while updating neighbours

java.lang.ArrayIndexOutOfBoundsException: 6
	at avm.d(SourceFile:381)
	at avm.k(SourceFile:142)
	at avm.a(SourceFile:120)
	at add.e(SourceFile:487)
	at add.d(SourceFile:468)
	at add.c(SourceFile:434)
	at add.d(SourceFile:337)
	at aal.a(SourceFile:69)
	at zg.a(SourceFile:108)
	at kq.a(SourceFile:252)
	at ku.a(SourceFile:357)
	at ic.a(SourceFile:58)
	at ea.b(SourceFile:64)
	at ku.e(SourceFile:63)
	at kx.b(SourceFile:37)
	at boc.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.u(SourceFile:483)
	at net.minecraft.server.MinecraftServer.t(SourceFile:400)
	at bnz.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:334)
	at jb.run(SourceFile:577)


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

-- Head --
Stacktrace:
	at avm.d(SourceFile:381)
	at avm.k(SourceFile:142)
	at avm.a(SourceFile:120)

-- Block being updated --
Details:
	Source block type: ID #0
	Block type: ID #33 (tile.pistonBase // avm)
	Block data value: 6 / 0x6 / 0b0110
	Block location: World: (-120,56,688), Chunk: (at 8,3,0 in -8,43; contains blocks -128,0,688 to -113,255,703), Region: (-1,1; contains chunks -32,32 to -1,63, blocks -512,0,512 to -1,255,1023)
Stacktrace:
	at add.e(SourceFile:487)
	at add.d(SourceFile:468)
	at add.c(SourceFile:434)
	at add.d(SourceFile:337)
	at aal.a(SourceFile:69)
	at zg.a(SourceFile:108)
	at kq.a(SourceFile:252)
	at ku.a(SourceFile:357)
	at ic.a(SourceFile:58)
	at ea.b(SourceFile:64)
	at ku.e(SourceFile:63)

-- Ticking connection --
Details:
	Connection: ku@5e92c29d
Stacktrace:
	at kx.b(SourceFile:37)
	at boc.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.u(SourceFile:483)
	at net.minecraft.server.MinecraftServer.t(SourceFile:400)
	at bnz.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:334)
	at jb.run(SourceFile:577)

-- System Details --
Details:
	Minecraft Version: 13w37b
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 175660352 bytes (167 MB) / 556007424 bytes (530 MB) up to 1908932608 bytes (1820 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2048M
	AABB Pool Size: 46 (2576 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2 (112 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [kp['Leif_The_Head'/0, l='snapredtest', x=-118,97, y=56,00, z=690,96]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.