Hopper: java.lang.ArrayIndexOutOfBoundsException

java.lang.ArrayIndexOutOfBoundsException
	at adr.a(SourceFile:823)
	at bcw.a(SourceFile:927)
	at el.a(SourceFile:141)
	at cn.b(SourceFile:64)
	at bcw.e(SourceFile:98)

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 9/19/13 4:55 PM
Description: Exception in world tick

java.lang.ArrayIndexOutOfBoundsException
	at adr.a(SourceFile:823)
	at bcw.a(SourceFile:927)
	at el.a(SourceFile:141)
	at cn.b(SourceFile:64)
	at bcw.e(SourceFile:98)
	at bdd.b(SourceFile:60)
	at atv.k(SourceFile:1386)
	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 adr.a(SourceFile:823)
	at bcw.a(SourceFile:927)
	at el.a(SourceFile:141)
	at cn.b(SourceFile:64)
	at bcw.e(SourceFile:98)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdi['Homeboy_01'/355, l='MpServer', x=72.92, y=99.25, z=250.28]]
	Chunk stats: MultiplayerChunkCache: 364
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (209,64,282), Chunk: (at 1,4,10 in 13,17; contains blocks 208,0,272 to 223,255,287), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 218754 game time, 218754 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: 81 total; [sc['Squid'/0, l='MpServer', x=19.75, y=60.29, z=225.49], sc['Squid'/1, l='MpServer', x=16.59, y=57.37, z=233.38], rq['Chicken'/2, l='MpServer', x=28.84, y=62.04, z=265.53], rq['Chicken'/3, l='MpServer', x=29.47, y=62.40, z=266.16], ss['item.item.egg'/4, l='MpServer', x=28.91, y=60.13, z=266.88], rq['Chicken'/5, l='MpServer', x=17.13, y=62.50, z=266.02], rq['Chicken'/6, l='MpServer', x=28.56, y=62.44, z=284.53], rq['Chicken'/7, l='MpServer', x=20.44, y=64.00, z=287.47], rq['Chicken'/8, l='MpServer', x=28.56, y=62.34, z=297.44], ss['item.item.egg'/9, l='MpServer', x=28.81, y=62.13, z=297.41], sc['Squid'/10, l='MpServer', x=20.03, y=58.38, z=294.46], sc['Squid'/11, l='MpServer', x=19.27, y=58.42, z=301.67], sc['Squid'/12, l='MpServer', x=12.53, y=57.43, z=294.96], sc['Squid'/13, l='MpServer', x=18.49, y=62.38, z=313.33], ry['Pig'/23, l='MpServer', x=39.81, y=72.00, z=247.06], ry['Pig'/22, l='MpServer', x=36.94, y=77.00, z=227.50], rq['Chicken'/25, l='MpServer', x=37.59, y=62.31, z=274.44], ro['Bat'/24, l='MpServer', x=39.40, y=43.00, z=281.71], rq['Chicken'/27, l='MpServer', x=32.69, y=62.55, z=295.81], bdi['Homeboy_01'/355, l='MpServer', x=72.92, y=99.25, z=250.28], ss['item.item.egg'/26, l='MpServer', x=34.78, y=59.13, z=284.81], ro['Bat'/28, l='MpServer', x=56.91, y=29.84, z=266.78], rq['Chicken'/34, l='MpServer', x=74.41, y=64.00, z=188.56], rq['Chicken'/35, l='MpServer', x=70.56, y=64.00, z=178.56], ry['Pig'/33, l='MpServer', x=77.75, y=64.00, z=174.91], rx['entity.Cat.name'/38, l='MpServer', x=76.88, y=92.00, z=239.72], ro['Bat'/39, l='MpServer', x=78.28, y=27.65, z=249.75], ro['Bat'/37, l='MpServer', x=77.75, y=42.10, z=224.50], rq['Chicken'/42, l='MpServer', x=79.41, y=89.00, z=252.59], sf['Wolf'/43, l='MpServer', x=79.13, y=92.00, z=244.09], rq['Chicken'/40, l='MpServer', x=68.22, y=77.00, z=240.53], rq['Chicken'/41, l='MpServer', x=78.38, y=84.00, z=252.66], ss['item.item.egg'/46, l='MpServer', x=73.03, y=74.13, z=294.97], ro['Bat'/47, l='MpServer', x=78.75, y=28.10, z=317.75], ro['Bat'/44, l='MpServer', x=74.64, y=63.75, z=262.47], rq['Chicken'/45, l='MpServer', x=76.38, y=76.00, z=293.59], ro['Bat'/48, l='MpServer', x=79.25, y=28.10, z=315.41], rq['Chicken'/55, l='MpServer', x=84.73, y=64.05, z=207.06], ry['Pig'/52, l='MpServer', x=90.82, y=70.00, z=175.30], ro['Bat'/59, l='MpServer', x=87.25, y=20.10, z=306.75], ro['Bat'/58, l='MpServer', x=90.75, y=29.10, z=315.25], ro['Bat'/57, l='MpServer', x=86.25, y=25.00, z=257.94], ry['Pig'/56, l='MpServer', x=82.78, y=67.00, z=206.91], rq['Chicken'/62, l='MpServer', x=96.41, y=67.00, z=320.64], ro['Bat'/61, l='MpServer', x=87.72, y=30.10, z=320.31], ss['item.item.egg'/60, l='MpServer', x=94.09, y=65.13, z=312.25], rq['Chicken'/71, l='MpServer', x=111.53, y=70.00, z=184.41], sf['Wolf'/76, l='MpServer', x=102.50, y=102.00, z=235.44], od['entity.ItemFrame.name'/77, l='MpServer', x=110.50, y=105.50, z=247.94], od['entity.ItemFrame.name'/78, l='MpServer', x=109.50, y=105.50, z=247.94], od['entity.ItemFrame.name'/79, l='MpServer', x=108.50, y=105.50, z=247.94], rq['Chicken'/72, l='MpServer', x=111.61, y=67.42, z=186.45], ro['Bat'/74, l='MpServer', x=97.25, y=45.10, z=204.25], ry['Pig'/75, l='MpServer', x=103.03, y=66.00, z=192.66], rq['Chicken'/85, l='MpServer', x=97.34, y=66.00, z=308.59], ry['Pig'/84, l='MpServer', x=104.03, y=69.00, z=314.03], ro['Bat'/87, l='MpServer', x=102.44, y=31.00, z=333.44], ss['item.item.egg'/86, l='MpServer', x=96.13, y=66.13, z=308.13], od['entity.ItemFrame.name'/81, l='MpServer', x=111.50, y=105.50, z=247.94], rx['entity.Cat.name'/80, l='MpServer', x=108.31, y=104.00, z=246.69], ss['item.item.egg'/83, l='MpServer', x=99.75, y=75.13, z=284.78], rq['Chicken'/82, l='MpServer', x=101.38, y=75.00, z=284.59], rq['Chicken'/95, l='MpServer', x=125.56, y=62.16, z=201.56], rz['Sheep'/100, l='MpServer', x=124.40, y=68.00, z=300.65], ry['Pig'/101, l='MpServer', x=127.19, y=68.00, z=308.50], ry['Pig'/98, l='MpServer', x=124.91, y=70.00, z=240.94], ry['Pig'/99, l='MpServer', x=121.38, y=71.00, z=287.22], rq['Chicken'/96, l='MpServer', x=114.41, y=69.00, z=216.41], ss['item.item.egg'/97, l='MpServer', x=113.13, y=69.13, z=216.59], ry['Pig'/110, l='MpServer', x=134.28, y=71.00, z=249.47], rz['Sheep'/111, l='MpServer', x=136.91, y=75.00, z=242.94], rq['Chicken'/108, l='MpServer', x=139.47, y=71.00, z=243.53], rz['Sheep'/109, l='MpServer', x=132.66, y=71.00, z=247.25], rs['Horse'/106, l='MpServer', x=142.56, y=102.00, z=221.34], rq['Chicken'/107, l='MpServer', x=139.58, y=71.42, z=241.78], rz['Sheep'/119, l='MpServer', x=151.47, y=73.00, z=201.19], ry['Pig'/112, l='MpServer', x=128.49, y=68.47, z=308.53], ro['Bat'/124, l='MpServer', x=155.13, y=14.00, z=287.25], ro['Bat'/123, l='MpServer', x=153.51, y=14.00, z=283.59], ro['Bat'/122, l='MpServer', x=149.19, y=63.50, z=262.63], ro['Bat'/121, l='MpServer', x=153.38, y=14.10, z=254.53]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bdd.a(SourceFile:284)
	at atv.k(SourceFile:1393)
	at atv.S(SourceFile:663)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdi['Homeboy_01'/355, l='MpServer', x=72.92, y=99.25, z=250.28]]
	Chunk stats: MultiplayerChunkCache: 364
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (209,64,282), Chunk: (at 1,4,10 in 13,17; contains blocks 208,0,272 to 223,255,287), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 218754 game time, 218754 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: 81 total; [sc['Squid'/0, l='MpServer', x=19.75, y=60.29, z=225.49], sc['Squid'/1, l='MpServer', x=16.59, y=57.37, z=233.38], rq['Chicken'/2, l='MpServer', x=28.84, y=62.04, z=265.53], rq['Chicken'/3, l='MpServer', x=29.47, y=62.40, z=266.16], ss['item.item.egg'/4, l='MpServer', x=28.91, y=60.13, z=266.88], rq['Chicken'/5, l='MpServer', x=17.13, y=62.50, z=266.02], rq['Chicken'/6, l='MpServer', x=28.56, y=62.44, z=284.53], rq['Chicken'/7, l='MpServer', x=20.44, y=64.00, z=287.47], rq['Chicken'/8, l='MpServer', x=28.56, y=62.34, z=297.44], ss['item.item.egg'/9, l='MpServer', x=28.81, y=62.13, z=297.41], sc['Squid'/10, l='MpServer', x=20.03, y=58.38, z=294.46], sc['Squid'/11, l='MpServer', x=19.27, y=58.42, z=301.67], sc['Squid'/12, l='MpServer', x=12.53, y=57.43, z=294.96], sc['Squid'/13, l='MpServer', x=18.49, y=62.38, z=313.33], ry['Pig'/23, l='MpServer', x=39.81, y=72.00, z=247.06], ry['Pig'/22, l='MpServer', x=36.94, y=77.00, z=227.50], rq['Chicken'/25, l='MpServer', x=37.59, y=62.31, z=274.44], ro['Bat'/24, l='MpServer', x=39.40, y=43.00, z=281.71], rq['Chicken'/27, l='MpServer', x=32.69, y=62.55, z=295.81], bdi['Homeboy_01'/355, l='MpServer', x=72.92, y=99.25, z=250.28], ss['item.item.egg'/26, l='MpServer', x=34.78, y=59.13, z=284.81], ro['Bat'/28, l='MpServer', x=56.91, y=29.84, z=266.78], rq['Chicken'/34, l='MpServer', x=74.41, y=64.00, z=188.56], rq['Chicken'/35, l='MpServer', x=70.56, y=64.00, z=178.56], ry['Pig'/33, l='MpServer', x=77.75, y=64.00, z=174.91], rx['entity.Cat.name'/38, l='MpServer', x=76.88, y=92.00, z=239.72], ro['Bat'/39, l='MpServer', x=78.28, y=27.65, z=249.75], ro['Bat'/37, l='MpServer', x=77.75, y=42.10, z=224.50], rq['Chicken'/42, l='MpServer', x=79.41, y=89.00, z=252.59], sf['Wolf'/43, l='MpServer', x=79.13, y=92.00, z=244.09], rq['Chicken'/40, l='MpServer', x=68.22, y=77.00, z=240.53], rq['Chicken'/41, l='MpServer', x=78.38, y=84.00, z=252.66], ss['item.item.egg'/46, l='MpServer', x=73.03, y=74.13, z=294.97], ro['Bat'/47, l='MpServer', x=78.75, y=28.10, z=317.75], ro['Bat'/44, l='MpServer', x=74.64, y=63.75, z=262.47], rq['Chicken'/45, l='MpServer', x=76.38, y=76.00, z=293.59], ro['Bat'/48, l='MpServer', x=79.25, y=28.10, z=315.41], rq['Chicken'/55, l='MpServer', x=84.73, y=64.05, z=207.06], ry['Pig'/52, l='MpServer', x=90.82, y=70.00, z=175.30], ro['Bat'/59, l='MpServer', x=87.25, y=20.10, z=306.75], ro['Bat'/58, l='MpServer', x=90.75, y=29.10, z=315.25], ro['Bat'/57, l='MpServer', x=86.25, y=25.00, z=257.94], ry['Pig'/56, l='MpServer', x=82.78, y=67.00, z=206.91], rq['Chicken'/62, l='MpServer', x=96.41, y=67.00, z=320.64], ro['Bat'/61, l='MpServer', x=87.72, y=30.10, z=320.31], ss['item.item.egg'/60, l='MpServer', x=94.09, y=65.13, z=312.25], rq['Chicken'/71, l='MpServer', x=111.53, y=70.00, z=184.41], sf['Wolf'/76, l='MpServer', x=102.50, y=102.00, z=235.44], od['entity.ItemFrame.name'/77, l='MpServer', x=110.50, y=105.50, z=247.94], od['entity.ItemFrame.name'/78, l='MpServer', x=109.50, y=105.50, z=247.94], od['entity.ItemFrame.name'/79, l='MpServer', x=108.50, y=105.50, z=247.94], rq['Chicken'/72, l='MpServer', x=111.61, y=67.42, z=186.45], ro['Bat'/74, l='MpServer', x=97.25, y=45.10, z=204.25], ry['Pig'/75, l='MpServer', x=103.03, y=66.00, z=192.66], rq['Chicken'/85, l='MpServer', x=97.34, y=66.00, z=308.59], ry['Pig'/84, l='MpServer', x=104.03, y=69.00, z=314.03], ro['Bat'/87, l='MpServer', x=102.44, y=31.00, z=333.44], ss['item.item.egg'/86, l='MpServer', x=96.13, y=66.13, z=308.13], od['entity.ItemFrame.name'/81, l='MpServer', x=111.50, y=105.50, z=247.94], rx['entity.Cat.name'/80, l='MpServer', x=108.31, y=104.00, z=246.69], ss['item.item.egg'/83, l='MpServer', x=99.75, y=75.13, z=284.78], rq['Chicken'/82, l='MpServer', x=101.38, y=75.00, z=284.59], rq['Chicken'/95, l='MpServer', x=125.56, y=62.16, z=201.56], rz['Sheep'/100, l='MpServer', x=124.40, y=68.00, z=300.65], ry['Pig'/101, l='MpServer', x=127.19, y=68.00, z=308.50], ry['Pig'/98, l='MpServer', x=124.91, y=70.00, z=240.94], ry['Pig'/99, l='MpServer', x=121.38, y=71.00, z=287.22], rq['Chicken'/96, l='MpServer', x=114.41, y=69.00, z=216.41], ss['item.item.egg'/97, l='MpServer', x=113.13, y=69.13, z=216.59], ry['Pig'/110, l='MpServer', x=134.28, y=71.00, z=249.47], rz['Sheep'/111, l='MpServer', x=136.91, y=75.00, z=242.94], rq['Chicken'/108, l='MpServer', x=139.47, y=71.00, z=243.53], rz['Sheep'/109, l='MpServer', x=132.66, y=71.00, z=247.25], rs['Horse'/106, l='MpServer', x=142.56, y=102.00, z=221.34], rq['Chicken'/107, l='MpServer', x=139.58, y=71.42, z=241.78], rz['Sheep'/119, l='MpServer', x=151.47, y=73.00, z=201.19], ry['Pig'/112, l='MpServer', x=128.49, y=68.47, z=308.53], ro['Bat'/124, l='MpServer', x=155.13, y=14.00, z=287.25], ro['Bat'/123, l='MpServer', x=153.51, y=14.00, z=283.59], ro['Bat'/122, l='MpServer', x=149.19, y=63.50, z=262.63], ro['Bat'/121, l='MpServer', x=153.38, y=14.10, z=254.53]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Mac OS X (x86_64) version 10.7.5
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 44044216 bytes (42 MB) / 169693184 bytes (161 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 14643 (820008 bytes; 0 MB) allocated, 934 (52304 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 12, 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-7.32.12, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: Canadian English (CA)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2714 (151984 bytes; 0 MB) allocated, 595 (33320 bytes; 0 MB) used