Hopper: java.lang.IndexOutOfBoundsException: Index: 58, Size: 45

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-191019/

Crash:

java.lang.IndexOutOfBoundsException: Index: 58, Size: 45
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at uy.a(SourceFile:314)
	at bdc.a(SourceFile:295)
	at awy.a(SourceFile:582)
	at awy.a(SourceFile:595)
	at awe.n(SourceFile:149)
	at awe.m(SourceFile:111)

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

---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 9/19/13 6:12 PM
Description: Updating screen events

java.lang.IndexOutOfBoundsException: Index: 58, Size: 45
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at uy.a(SourceFile:314)
	at bdc.a(SourceFile:295)
	at awy.a(SourceFile:582)
	at awy.a(SourceFile:595)
	at awe.n(SourceFile:149)
	at awe.m(SourceFile:111)
	at atv.k(SourceFile:1158)
	at atv.S(SourceFile:663)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at uy.a(SourceFile:314)
	at bdc.a(SourceFile:295)
	at awy.a(SourceFile:582)
	at awy.a(SourceFile:595)
	at awe.n(SourceFile:149)
	at awe.m(SourceFile:111)

-- Affected screen --
Details:
	Screen name: ~~ERROR~~ NullPointerException: null

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdi['lewistennent'/17290, l='MpServer', x=0.93, y=238.62, z=150.69]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (0,4,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 368018 game time, 112507 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: 20 total; [rs['sherif'/17269, l='MpServer', x=-19.41, y=237.00, z=119.72], rs['Ashari'/17268, l='MpServer', x=-17.63, y=237.00, z=121.28], sf['spike'/17271, l='MpServer', x=-11.22, y=237.00, z=110.78], sf['rip jaw'/17270, l='MpServer', x=-10.09, y=237.00, z=109.38], ol['Painting'/17265, l='MpServer', x=-25.50, y=239.50, z=64.06], ol['Painting'/17264, l='MpServer', x=-27.50, y=239.50, z=64.06], ol['Painting'/17267, l='MpServer', x=-27.50, y=239.50, z=70.94], ol['Painting'/17266, l='MpServer', x=-25.50, y=239.50, z=70.94], rs['stoffel'/17273, l='MpServer', x=2.03, y=237.00, z=105.94], sf['spike'/17272, l='MpServer', x=-11.84, y=237.00, z=112.69], rs['damien'/17274, l='MpServer', x=0.47, y=237.00, z=105.00], ol['Painting'/17264, l='MpServer', x=-27.50, y=239.50, z=64.06], ol['Painting'/17265, l='MpServer', x=-25.50, y=239.50, z=64.06], ol['Painting'/17266, l='MpServer', x=-25.50, y=239.50, z=70.94], ol['Painting'/17267, l='MpServer', x=-27.50, y=239.50, z=70.94], oe['entity.LeashKnot.name'/17289, l='MpServer', x=-16.50, y=237.50, z=120.50], ss['item.item.seeds'/52807, l='MpServer', x=3.47, y=236.13, z=152.22], oe['entity.LeashKnot.name'/17288, l='MpServer', x=-16.50, y=238.50, z=120.50], ss['item.item.seeds'/48269, l='MpServer', x=3.34, y=236.13, z=194.28], bdi['lewistennent'/17290, l='MpServer', x=0.93, y=238.62, z=150.69]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bdd.a(SourceFile:284)
	at atv.b(SourceFile:1761)
	at atv.d(SourceFile:628)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Mac OS X (x86_64) version 10.8.5
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 132092248 bytes (125 MB) / 445362176 bytes (424 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 177 (9912 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Launched Version: 1.6.4
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 6970M OpenGL Engine GL version 2.1 ATI-1.8.19, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: 128x MojoKraft v5
	Current Language: Canadian English (CA)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 67 (3752 bytes; 0 MB) allocated, 16 (896 bytes; 0 MB) used

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-191019/12387001/