Hopper: java.lang.ArrayIndexOutOfBoundsException: 514

java.lang.ArrayIndexOutOfBoundsException: 514
	at amm.a(SourceFile:152)
	at amo.a(SourceFile:95)
	at amn.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at ama.a(SourceFile:16)
	at amz.a(SourceFile:20)
	at amt.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at amz.a(SourceFile:20)
	at amu.a(SourceFile:15)
	at ams.a(SourceFile:24)
	at amy.a(SourceFile:23)
	at adv.a(SourceFile:165)
	at adt.<init>(SourceFile:27)
	at ads.a(SourceFile:52)
	at ads.d(SourceFile:87)
	at adv.a(SourceFile:160)
	at adv.b(SourceFile:150)
	at agb.d(SourceFile:194)

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 9/5/13 2:10 PM
Description: Exception generating new chunk

java.lang.ArrayIndexOutOfBoundsException: 514
	at amm.a(SourceFile:152)
	at amo.a(SourceFile:95)
	at amn.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at ama.a(SourceFile:16)
	at amz.a(SourceFile:20)
	at amt.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at amz.a(SourceFile:20)
	at amu.a(SourceFile:15)
	at ams.a(SourceFile:24)
	at amy.a(SourceFile:23)
	at adv.a(SourceFile:165)
	at adt.<init>(SourceFile:27)
	at ads.a(SourceFile:52)
	at ads.d(SourceFile:87)
	at adv.a(SourceFile:160)
	at adv.b(SourceFile:150)
	at agb.d(SourceFile:194)
	at kc.c(SourceFile:72)
	at kb.<init>(SourceFile:28)
	at ka.a(SourceFile:209)
	at ka.d(SourceFile:343)
	at hx.d(SourceFile:208)
	at kl.a(SourceFile:272)
	at fe.a(SourceFile:136)
	at cx.b(SourceFile:64)
	at kl.e(SourceFile:63)
	at ko.b(SourceFile:37)
	at bnj.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bng.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hs.run(SourceFile:575)


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

-- Head --
Stacktrace:
	at amm.a(SourceFile:152)
	at amo.a(SourceFile:95)
	at amn.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at ama.a(SourceFile:16)
	at amz.a(SourceFile:20)
	at amt.a(SourceFile:13)
	at amz.a(SourceFile:20)
	at amz.a(SourceFile:20)
	at amu.a(SourceFile:15)
	at ams.a(SourceFile:24)
	at amy.a(SourceFile:23)
	at adv.a(SourceFile:165)
	at adt.<init>(SourceFile:27)
	at ads.a(SourceFile:52)
	at ads.d(SourceFile:87)
	at adv.a(SourceFile:160)
	at adv.b(SourceFile:150)
	at agb.d(SourceFile:194)

-- Chunk to be generated --
Details:
	Location: -47,14
	Position hash: 64424509393
	Generator: RandomLevelSource
Stacktrace:
	at kc.c(SourceFile:72)
	at kb.<init>(SourceFile:28)
	at ka.a(SourceFile:209)
	at ka.d(SourceFile:343)
	at hx.d(SourceFile:208)
	at kl.a(SourceFile:272)
	at fe.a(SourceFile:136)
	at cx.b(SourceFile:64)
	at kl.e(SourceFile:63)

-- Ticking connection --
Details:
	Connection: kl@11ea093
Stacktrace:
	at ko.b(SourceFile:37)
	at bnj.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bng.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hs.run(SourceFile:575)

-- System Details --
Details:
	Minecraft Version: 13w36a
	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: 237844288 bytes (226 MB) / 438652928 bytes (418 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 13839 (774984 bytes; 0 MB) allocated, 7549 (422744 bytes; 0 MB) used
	Suspicious classes: [com.ibm.icu.text.ArabicShapingException], [gnu.trove.TIntCollection], [gnu.trove.impl.HashFunctions, PrimeFinder], [gnu.trove.impl.hash.THash, TPrimitiveHash, TIntIntHash], [gnu.trove.iterator.TIterator, TAdvancingIterator, TIntIntIterator], [gnu.trove.map.TIntIntMap], [gnu.trove.map.hash.TIntIntHashMap], [gnu.trove.procedure.TIntIntProcedure], [gnu.trove.set.TIntSet]
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1299 (72744 bytes; 0 MB) allocated, 1119 (62664 bytes; 0 MB) used
	Player Count: 1 / 8; [kg['ShiningArmour'/328, l='Amp It Up!', x=-590.77, y=248.15, z=64.30]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.