Hopper: java.lang.ArrayIndexOutOfBoundsException: 271740

java.lang.ArrayIndexOutOfBoundsException: 271740
	at adw.a(SourceFile:167)
	at adu.<init>(SourceFile:27)
	at adt.a(SourceFile:52)
	at adt.d(SourceFile:87)
	at adw.a(SourceFile:160)
	at adw.b(SourceFile:150)
	at agc.d(SourceFile:190)

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 07/09/13 14:41
Description: Exception generating new chunk

java.lang.ArrayIndexOutOfBoundsException: 151720
	at adw.a(SourceFile:167)
	at adu.<init>(SourceFile:27)
	at adt.a(SourceFile:52)
	at adt.d(SourceFile:87)
	at adw.a(SourceFile:160)
	at adw.b(SourceFile:150)
	at agc.d(SourceFile:190)
	at kc.c(SourceFile:72)
	at kb.<init>(SourceFile:28)
	at ka.a(SourceFile:209)
	at ka.a(SourceFile:246)
	at hw.a(SourceFile:151)
	at hw.c(SourceFile:202)
	at hw.a(SourceFile:95)
	at bnq.b(SourceFile:73)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bnn.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hr.run(SourceFile:575)


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

-- Head --
Stacktrace:
	at adw.a(SourceFile:167)
	at adu.<init>(SourceFile:27)
	at adt.a(SourceFile:52)
	at adt.d(SourceFile:87)
	at adw.a(SourceFile:160)
	at adw.b(SourceFile:150)
	at agc.d(SourceFile:190)

-- Chunk to be generated --
Details:
	Location: -8,-20
	Position hash: -81604378632
	Generator: RandomLevelSource
Stacktrace:
	at kc.c(SourceFile:72)
	at kb.<init>(SourceFile:28)
	at ka.a(SourceFile:209)
	at ka.a(SourceFile:246)
	at hw.a(SourceFile:151)
	at hw.c(SourceFile:202)
	at hw.a(SourceFile:95)
	at bnq.b(SourceFile:73)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bnn.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hr.run(SourceFile:575)

-- System Details --
Details:
	Minecraft Version: 13w36b
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.6.0_30, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Sun Microsystems Inc.
	Memory: 250474088 bytes (238 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 3734 (209104 bytes; 0 MB) allocated, 3520 (197120 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 14, tallocated: 123
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 456 (25536 bytes; 0 MB) allocated, 456 (25536 bytes; 0 MB) used
	Player Count: 1 / 8; [kg['brickbreaker19'/80231, l='New World', x=35.07, y=86.34, z=-330.32]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.