Hopper: java.lang.IllegalArgumentException: Biome ID is out of bounds: 2563

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-293487/

Crash:

java.lang.IllegalArgumentException: Biome ID is out of bounds: 2563
	at agb.d(SourceFile:480)

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

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 10/10/13 7:53 AM
Description: Comparing biomes

java.lang.IllegalArgumentException: Biome ID is out of bounds: 2563
	at agb.d(SourceFile:480)
	at avo.a(SourceFile:159)
	at avs.a(SourceFile:70)
	at avr.a(SourceFile:13)
	at awd.a(SourceFile:20)
	at avc.a(SourceFile:16)
	at awd.a(SourceFile:20)
	at avx.a(SourceFile:13)
	at awd.a(SourceFile:20)
	at awd.a(SourceFile:20)
	at avy.a(SourceFile:15)
	at avw.a(SourceFile:24)
	at awc.a(SourceFile:23)
	at agi.a(SourceFile:79)
	at agg.<init>(SourceFile:26)
	at agf.a(SourceFile:52)
	at agf.b(SourceFile:61)
	at agi.a(SourceFile:61)
	at any.a(SourceFile:933)
	at afh.a(SourceFile:115)
	at afh.a(SourceFile:1046)
	at bkv.i(SourceFile:1330)
	at bkv.a(SourceFile:919)
	at bkv.b(SourceFile:814)
	at ays.ab(SourceFile:783)
	at ays.e(SourceFile:706)
	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 agb.d(SourceFile:480)

-- Biomes being compared --
Details:
	Biome A ID: 2563
	Biome B ID: 38
	Biome A: ~~ERROR~~ IllegalArgumentException: Biome ID is out of bounds: 2563
	Biome B: ags@16e4a57
Stacktrace:
	at avo.a(SourceFile:159)
	at avs.a(SourceFile:70)
	at avr.a(SourceFile:13)
	at awd.a(SourceFile:20)
	at avc.a(SourceFile:16)
	at awd.a(SourceFile:20)
	at avx.a(SourceFile:13)
	at awd.a(SourceFile:20)
	at awd.a(SourceFile:20)
	at avy.a(SourceFile:15)
	at avw.a(SourceFile:24)
	at awc.a(SourceFile:23)
	at agi.a(SourceFile:79)
	at agg.<init>(SourceFile:26)
	at agf.a(SourceFile:52)
	at agf.b(SourceFile:61)
	at agi.a(SourceFile:61)
	at any.a(SourceFile:933)

-- Coordinates of biome request --
Details:
	Location: World: (8,0,8), Chunk: (at 8,0,8 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)
Stacktrace:
	at afh.a(SourceFile:115)
	at afh.a(SourceFile:1046)
	at bkv.i(SourceFile:1330)
	at bkv.a(SourceFile:919)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bip['QarynF'/258, l='MpServer', x=8.50, y=66.62, z=8.50]]
	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: (-237,64,263), Chunk: (at 3,4,7 in -15,16; contains blocks -240,0,256 to -225,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 6275944 game time, 6283609 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: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 1 total; [bip['QarynF'/258, l='MpServer', x=8.50, y=66.62, z=8.50]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bik.a(SourceFile:302)
	at ays.b(SourceFile:1924)
	at ays.e(SourceFile:715)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w41a
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 139100840 bytes (132 MB) / 284991488 bytes (271 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 17427 (975912 bytes; 0 MB) allocated, 17427 (975912 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 16, allocated: 12, tallocated: 94
	Launched Version: 13w41a
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 4550 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: 16 (896 bytes; 0 MB) allocated, 16 (896 bytes; 0 MB) used

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-293487/16536092/