Hopper: java.lang.ArrayIndexOutOfBoundsException: 6

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-72984/

Crash:

java.lang.ArrayIndexOutOfBoundsException: 6
	at apx.a(SourceFile:149)
	at yb.b_(SourceFile:19)
	at yv.j(SourceFile:357)
	at yx.c(SourceFile:94)
	at bja.a(SourceFile:266)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// There are four lights!

Time: 13/09/06 20:08
Description: Rendering item

java.lang.ArrayIndexOutOfBoundsException: 6
	at apx.a(SourceFile:149)
	at yb.b_(SourceFile:19)
	at yv.j(SourceFile:357)
	at yx.c(SourceFile:94)
	at bja.a(SourceFile:266)
	at bja.b(SourceFile:338)
	at awx.a(SourceFile:733)
	at awx.a(SourceFile:122)
	at bhh.b(SourceFile:702)
	at avx.V(SourceFile:713)
	at avx.e(SourceFile:642)
	at net.minecraft.client.main.Main.main(SourceFile:103)


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

-- Head --
Stacktrace:
	at apx.a(SourceFile:149)
	at yb.b_(SourceFile:19)
	at yv.j(SourceFile:357)
	at yx.c(SourceFile:94)
	at bja.a(SourceFile:266)

-- Item being rendered --
Details:
	Item Type: yb@146c2f2
	Item Aux: 6
	Item NBT: null
	Item Foil: false
Stacktrace:
	at bja.b(SourceFile:338)
	at awx.a(SourceFile:733)
	at awx.a(SourceFile:122)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfg['mako0001'/200, l='MpServer', x=3.67, y=73.62, z=440.20]]
	Chunk stats: MultiplayerChunkCache: 0, 0
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-244,64,240), Chunk: (at 12,4,0 in -16,15; contains blocks -256,0,240 to -241,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 5497 game time, 5497 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: 1 total; [bfg['mako0001'/200, l='MpServer', x=3.67, y=73.62, z=440.20]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bfb.a(SourceFile:285)
	at avx.b(SourceFile:1813)
	at avx.e(SourceFile:651)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36a
	Operating System: Windows XP (x86) version 5.1
	Java Version: 1.7.0_11, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 118451936 bytes (112 MB) / 223092736 bytes (212 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 7957 (445592 bytes; 0 MB) allocated, 4628 (259168 bytes; 0 MB) used
	Suspicious classes: [com.ibm.icu.text.ArabicShapingException], [gnu.trove.TIntCollection], [gnu.trove.impl.HashFunctions, PrimeFinder], [gnu.trove.impl.hash.THash, TPrimitiveHash, TIntIntHash], [gnu.trove.iterator.TIterator, TAdvancingIterator, TIntIntIterator], [gnu.trove.map.TIntIntMap], [gnu.trove.map.hash.TIntIntHashMap], [gnu.trove.procedure.TIntIntProcedure], [gnu.trove.set.TIntSet]
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Launched Version: 13w36a
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 4600 Series GL version 3.2.9551 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: 日本語 (日本)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 136 (7616 bytes; 0 MB) allocated, 38 (2128 bytes; 0 MB) used

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-72984/8299849/