Hopper: java.lang.ArrayIndexOutOfBoundsException: 60

java.lang.ArrayIndexOutOfBoundsException: 60
	at java.lang.String.indexOf(Unknown Source)
	at java.lang.String.indexOf(Unknown Source)
	at aww.a(SourceFile:478)
	at aww.a(SourceFile:451)
	at awy.a(SourceFile:97)
	at axc.a(SourceFile:68)
	at ayr.a(SourceFile:33)
	at axu.a(SourceFile:334)

---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 06/09/13 08:06
Description: Rendering screen

java.lang.ArrayIndexOutOfBoundsException: 60
	at java.lang.String.indexOf(Unknown Source)
	at java.lang.String.indexOf(Unknown Source)
	at aww.a(SourceFile:478)
	at aww.a(SourceFile:451)
	at awy.a(SourceFile:97)
	at axc.a(SourceFile:68)
	at ayr.a(SourceFile:33)
	at axu.a(SourceFile:334)
	at bhh.b(SourceFile:720)
	at avx.V(SourceFile:713)
	at avx.e(SourceFile:642)
	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 java.lang.String.indexOf(Unknown Source)
	at java.lang.String.indexOf(Unknown Source)
	at aww.a(SourceFile:478)
	at aww.a(SourceFile:451)
	at awy.a(SourceFile:97)
	at axc.a(SourceFile:68)
	at ayr.a(SourceFile:33)
	at axu.a(SourceFile:334)

-- Screen render details --
Details:
	Screen name: axu
	Mouse location: Scaled: (236, 100). Absolute: (945, 603)
	Screen size: Scaled: (480, 252). Absolute: (1920, 1005). Scale factor of 4
Stacktrace:
	at bhh.b(SourceFile:720)
	at avx.V(SourceFile:713)
	at avx.e(SourceFile:642)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36a
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.6.0_32, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Sun Microsystems Inc.
	Memory: 37416384 bytes (35 MB) / 67981312 bytes (64 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 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: 0, tallocated: 0
	Launched Version: 13w36a
	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 (UK)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null