Hopper: java.lang.ArrayIndexOutOfBoundsException: 305

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-398958/

Crash:

java.lang.ArrayIndexOutOfBoundsException: 305
	at azz.a(SourceFile:473)
	at azz.a(SourceFile:445)
	at bgb.a(SourceFile:81)
	at bam.a(SourceFile:26)
	at bar.b(SourceFile:382)
	at bar.a(SourceFile:259)
	at bga.a(SourceFile:172)

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

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 10/18/13 11:25 AM
Description: Rendering screen

java.lang.ArrayIndexOutOfBoundsException: 305
	at azz.a(SourceFile:473)
	at azz.a(SourceFile:445)
	at bgb.a(SourceFile:81)
	at bam.a(SourceFile:26)
	at bar.b(SourceFile:382)
	at bar.a(SourceFile:259)
	at bga.a(SourceFile:172)
	at blc.b(SourceFile:850)
	at ayw.ad(SourceFile:782)
	at ayw.e(SourceFile:706)
	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 azz.a(SourceFile:473)
	at azz.a(SourceFile:445)
	at bgb.a(SourceFile:81)
	at bam.a(SourceFile:26)
	at bar.b(SourceFile:382)
	at bar.a(SourceFile:259)
	at bga.a(SourceFile:172)

-- Screen render details --
Details:
	Screen name: bga
	Mouse location: Scaled: (175, 182). Absolute: (350, 115)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
	at blc.b(SourceFile:850)
	at ayw.ad(SourceFile:782)
	at ayw.e(SourceFile:706)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w42b
	Operating System: Mac OS X (x86_64) version 10.8.4
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 89170632 bytes (85 MB) / 136953856 bytes (130 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 13w42b
	LWJGL: 2.9.1
	OpenGL: Intel HD Graphics 4000 OpenGL Engine GL version 2.1 INTEL-8.12.47, Intel Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: [faithful32pack]
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
	Anisotropic Filtering: Off (1)

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-398958/19121180/