Hopper: java.lang.IllegalArgumentException: Biome ID is out of bounds: 2049

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-247461/

Crash:

java.lang.IllegalArgumentException: Biome ID is out of bounds: 2049
	at aea.d(SourceFile:480)

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

---- Minecraft Crash Report ----
// Don't do that.

Time: 27.09.13 14:44
Description: Comparing biomes

java.lang.IllegalArgumentException: Biome ID is out of bounds: 2049
	at aea.d(SourceFile:480)
	at atl.a(SourceFile:159)
	at atp.a(SourceFile:97)
	at ato.a(SourceFile:13)
	at aua.a(SourceFile:20)
	at asz.a(SourceFile:16)
	at aua.a(SourceFile:20)
	at atu.a(SourceFile:13)
	at aua.a(SourceFile:20)
	at aua.a(SourceFile:20)
	at atv.a(SourceFile:15)
	at att.a(SourceFile:24)
	at atz.a(SourceFile:23)
	at aeh.a(SourceFile:165)
	at aef.<init>(SourceFile:27)
	at aee.a(SourceFile:52)
	at aee.b(SourceFile:61)
	at aeh.a(SourceFile:61)
	at alw.a(SourceFile:933)
	at adg.a(SourceFile:115)
	at adg.a(SourceFile:1040)
	at bik.i(SourceFile:1319)
	at bik.a(SourceFile:915)
	at bik.b(SourceFile:810)
	at awq.aa(SourceFile:781)
	at awq.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:104)


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

-- Head --
Stacktrace:
	at aea.d(SourceFile:480)

-- Biomes being compared --
Details:
	Biome A ID: 2049
	Biome B ID: 2
	Biome A: ~~ERROR~~ IllegalArgumentException: Biome ID is out of bounds: 2049
	Biome B: aei@3cc5d56a
Stacktrace:
	at atl.a(SourceFile:159)
	at atp.a(SourceFile:97)
	at ato.a(SourceFile:13)
	at aua.a(SourceFile:20)
	at asz.a(SourceFile:16)
	at aua.a(SourceFile:20)
	at atu.a(SourceFile:13)
	at aua.a(SourceFile:20)
	at aua.a(SourceFile:20)
	at atv.a(SourceFile:15)
	at att.a(SourceFile:24)
	at atz.a(SourceFile:23)
	at aeh.a(SourceFile:165)
	at aef.<init>(SourceFile:27)
	at aee.a(SourceFile:52)
	at aee.b(SourceFile:61)
	at aeh.a(SourceFile:61)
	at alw.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 adg.a(SourceFile:115)
	at adg.a(SourceFile:1040)
	at bik.i(SourceFile:1319)
	at bik.a(SourceFile:915)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bgi['todm'/60, 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: (248,64,256), Chunk: (at 8,4,0 in 15,16; contains blocks 240,0,256 to 255,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 14933 game time, 3542 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; [bgi['todm'/60, 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 bgd.a(SourceFile:301)
	at awq.b(SourceFile:1901)
	at awq.e(SourceFile:713)
	at net.minecraft.client.main.Main.main(SourceFile:104)

-- System Details --
Details:
	Minecraft Version: 13w39b
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 358138336 bytes (341 MB) / 454230016 bytes (433 MB) up to 4772200448 bytes (4551 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx5G
	AABB Pool Size: 10003 (560168 bytes; 0 MB) allocated, 10003 (560168 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 16, allocated: 12, tallocated: 94
	Launched Version: 13w39b
	LWJGL: 2.9.0
	OpenGL: GeForce GTX 660/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
	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: 12 (672 bytes; 0 MB) allocated, 12 (672 bytes; 0 MB) used

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-247461/14583779/