Hopper: java.lang.ArrayIndexOutOfBoundsException: 2049

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-190900/

Crash:

java.lang.ArrayIndexOutOfBoundsException: 2049
	at aeg.a(SourceFile:82)

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

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

Time: 19.09.13 19:28
Description: Invalid Biome id

java.lang.NullPointerException
	at aeg.a(SourceFile:82)
	at aee.<init>(SourceFile:26)
	at aed.a(SourceFile:52)
	at aed.b(SourceFile:61)
	at aeg.a(SourceFile:61)
	at afj.a(SourceFile:926)
	at add.a(SourceFile:101)
	at add.d(SourceFile:1947)
	at add.y(SourceFile:1943)
	at km.g(SourceFile:258)
	at km.b(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:461)
	at net.minecraft.server.MinecraftServer.t(SourceFile:404)
	at bor.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:338)
	at jb.run(SourceFile:581)


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

-- Head --
Stacktrace:
	at aeg.a(SourceFile:82)

-- DownfallBlock --
Details:
	downfalls[] size: 256
	x: -112
	z: 80
	w: 16
	h: 16
Stacktrace:
	at aeg.a(SourceFile:82)
	at aee.<init>(SourceFile:26)
	at aed.a(SourceFile:52)
	at aed.b(SourceFile:61)
	at aeg.a(SourceFile:61)
	at afj.a(SourceFile:926)

-- Coordinates of biome request --
Details:
	Location: World: (-109,0,83), Chunk: (at 3,0,3 in -7,5; contains blocks -112,0,80 to -97,255,95), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Stacktrace:
	at add.a(SourceFile:101)
	at add.d(SourceFile:1947)
	at add.y(SourceFile:1943)
	at km.g(SourceFile:258)
	at km.b(SourceFile:134)

-- Affected level --
Details:
	Level name: lsa#olsejfpiwgf
	All players: 1 total; [kp['PxlPanda'/130, l='lsa#olsejfpiwgf', x=0,53, y=64,00, z=0,75]]
	Chunk stats: ServerChunkCache: 625 Drop: 0
	Level seed: -1486308399805536256
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (0,65,0), Chunk: (at 0,4,0 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: 39 game time, 39 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 30518 (now: false), thunder time: 69127 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.u(SourceFile:461)
	at net.minecraft.server.MinecraftServer.t(SourceFile:404)
	at bor.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:338)
	at jb.run(SourceFile:581)

-- System Details --
Details:
	Minecraft Version: 13w38a
	Operating System: Mac OS X (x86_64) version 10.7.5
	Java Version: 1.6.0_45, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 78326264 bytes (74 MB) / 183955456 bytes (175 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 1938 (108528 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 7, tcache: 67, allocated: 14, tallocated: 106
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 228 (12768 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [kp['PxlPanda'/130, l='lsa#olsejfpiwgf', x=0,53, y=64,00, z=0,75]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-190900/12391330/