Hopper: java.lang.IndexOutOfBoundsException: Index: 4, Size: 4

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-72745/

Crash:

java.lang.IndexOutOfBoundsException: Index: 4, Size: 4
	at java.util.ArrayList.rangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at bap.a(SourceFile:102)
	at azr.a(SourceFile:80)
	at bap.a(SourceFile:116)

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

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 05/09/13 18:05
Description: Rendering screen

java.lang.IndexOutOfBoundsException: Index: 7, Size: 7
	at java.util.ArrayList.rangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at bap.a(SourceFile:102)
	at azr.a(SourceFile:80)
	at bap.a(SourceFile:116)
	at bhh.b(SourceFile:720)
	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 java.util.ArrayList.rangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at bap.a(SourceFile:102)
	at azr.a(SourceFile:80)
	at bap.a(SourceFile:116)

-- Screen render details --
Details:
	Screen name: bap
	Mouse location: Scaled: (341, 124). Absolute: (1025, 657)
	Screen size: Scaled: (560, 344). Absolute: (1680, 1030). Scale factor of 3

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfg['Azgahn'/1224642, l='MpServer', x=194.58, y=5.62, z=-399.97]]
	Chunk stats: MultiplayerChunkCache: 331, 331
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-97,4,-332), Chunk: (at 15,0,4 in -7,-21; contains blocks -112,0,-336 to -97,255,-321), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Level time: 41281 game time, 41281 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: 58 total; [sd['Bat'/1666444, l='MpServer', x=213.17, y=7.49, z=-381.25], sd['Bat'/1673476, l='MpServer', x=173.81, y=6.10, z=-417.25], sd['Bat'/1666441, l='MpServer', x=215.56, y=6.10, z=-382.25], us['Villager'/1230185, l='MpServer', x=167.28, y=5.00, z=-405.44], us['Villager'/1230184, l='MpServer', x=175.13, y=5.00, z=-431.31], us['Villager'/1230187, l='MpServer', x=161.69, y=2.00, z=-403.31], us['Villager'/1230186, l='MpServer', x=169.31, y=5.00, z=-414.44], us['Villager'/1230189, l='MpServer', x=186.25, y=5.00, z=-416.63], us['Villager'/1230188, l='MpServer', x=161.31, y=2.00, z=-401.69], us['Villager'/1230191, l='MpServer', x=160.69, y=2.00, z=-403.69], sd['Bat'/1668623, l='MpServer', x=212.25, y=7.83, z=-381.25], us['Villager'/1230190, l='MpServer', x=178.50, y=5.00, z=-436.50], us['Villager'/1230192, l='MpServer', x=159.69, y=2.00, z=-401.31], sd['Bat'/1668624, l='MpServer', x=212.25, y=8.10, z=-382.75], us['Villager'/1230193, l='MpServer', x=161.69, y=2.00, z=-399.69], sd['Bat'/1652003, l='MpServer', x=169.75, y=8.10, z=-393.75], sd['Bat'/1395711, l='MpServer', x=176.66, y=7.10, z=-423.19], sd['Bat'/1669216, l='MpServer', x=194.44, y=5.70, z=-360.47], sd['Bat'/1648184, l='MpServer', x=214.13, y=8.10, z=-381.25], us['Villager'/1230828, l='MpServer', x=175.94, y=5.00, z=-431.31], us['Villager'/1230829, l='MpServer', x=194.69, y=2.00, z=-401.88], us['Villager'/1230830, l='MpServer', x=175.50, y=5.50, z=-417.06], us['Villager'/1230831, l='MpServer', x=160.69, y=2.00, z=-398.69], us['Villager'/1230827, l='MpServer', x=177.69, y=5.00, z=-431.69], sd['Bat'/1672701, l='MpServer', x=162.75, y=7.10, z=-430.47], tj['item.item.egg'/1628550, l='MpServer', x=175.34, y=4.13, z=-373.06], us['Villager'/1229525, l='MpServer', x=174.31, y=5.00, z=-431.31], us['Villager'/1229524, l='MpServer', x=176.91, y=5.00, z=-431.69], us['Villager'/1229523, l='MpServer', x=166.50, y=5.00, z=-406.69], sd['Bat'/1642047, l='MpServer', x=213.25, y=6.10, z=-383.19], us['Villager'/1231573, l='MpServer', x=177.69, y=5.00, z=-431.31], us['Villager'/1231572, l='MpServer', x=177.69, y=5.00, z=-431.31], us['Villager'/1231575, l='MpServer', x=165.50, y=5.00, z=-406.69], us['Villager'/1231574, l='MpServer', x=185.16, y=5.00, z=-421.56], us['Villager'/1231571, l='MpServer', x=167.69, y=5.00, z=-407.75], us['Villager'/1228781, l='MpServer', x=159.50, y=2.00, z=-399.69], us['Villager'/1231570, l='MpServer', x=164.69, y=5.00, z=-396.69], sf['Chicken'/1236896, l='MpServer', x=173.53, y=4.00, z=-373.53], sd['Bat'/1638348, l='MpServer', x=169.47, y=12.10, z=-414.25], us['Villager'/1231576, l='MpServer', x=167.47, y=5.00, z=-406.44], sd['Bat'/1660181, l='MpServer', x=222.47, y=8.10, z=-393.75], sn['Pig'/1236891, l='MpServer', x=138.91, y=4.00, z=-367.13], sd['Bat'/1662106, l='MpServer', x=165.34, y=8.10, z=-391.25], so['Sheep'/1236895, l='MpServer', x=223.16, y=4.00, z=-414.94], so['Sheep'/1236893, l='MpServer', x=173.34, y=5.00, z=-371.56], sn['Pig'/1236882, l='MpServer', x=189.41, y=4.00, z=-348.22], sd['Bat'/1447983, l='MpServer', x=174.25, y=6.10, z=-416.25], sn['Pig'/1236883, l='MpServer', x=196.09, y=4.00, z=-362.03], sn['Pig'/1236884, l='MpServer', x=188.50, y=4.00, z=-356.50], bfg['Azgahn'/1224642, l='MpServer', x=194.58, y=5.62, z=-399.97], sn['Pig'/1236885, l='MpServer', x=191.50, y=4.00, z=-359.50], sd['Bat'/1671763, l='MpServer', x=183.21, y=4.98, z=-425.48], us['Villager'/1232679, l='MpServer', x=160.69, y=5.00, z=-414.31], us['Villager'/1232260, l='MpServer', x=177.09, y=6.00, z=-416.44], sd['Bat'/1653015, l='MpServer', x=221.59, y=6.10, z=-391.81], us['Villager'/1232258, l='MpServer', x=159.69, y=5.00, z=-415.34], us['Villager'/1232259, l='MpServer', x=186.09, y=5.00, z=-421.69], us['Villager'/1232257, l='MpServer', x=184.75, y=6.00, z=-431.66]]
	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 Vista (x86) version 6.0
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 15797576 bytes (15 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 5776 (323456 bytes; 0 MB) allocated, 5776 (323456 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: 13, tallocated: 95
	Launched Version: 13w36a
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 4800 Series GL version 3.3.11672 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: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 901 (50456 bytes; 0 MB) allocated, 901 (50456 bytes; 0 MB) used

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-72745/8115538/