Hopper: java.lang.ArrayIndexOutOfBoundsException: -18

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-21970/

Crash:

java.lang.ArrayIndexOutOfBoundsException: -18
	at b.a(SourceFile:330)
	at b.a(SourceFile:317)
	at bij.a(SourceFile:77)
	at bij.a(SourceFile:37)
	at avf.b(SourceFile:192)
	at avf.a(SourceFile:202)
	at avf.a(SourceFile:156)
	at avf.a(SourceFile:400)
	at avf.b(SourceFile:479)
	at avf.a(SourceFile:248)
	at avf.a(SourceFile:232)
	at avh.b(SourceFile:100)
	at avl.d(SourceFile:428)
	at avl.a(SourceFile:339)
	at awd.a(SourceFile:274)
	at avk.a(SourceFile:263)

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

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

Time: 07/09/13 10:13
Description: Rendering screen

java.lang.ArrayIndexOutOfBoundsException: -18
	at b.a(SourceFile:330)
	at b.a(SourceFile:317)
	at bij.a(SourceFile:77)
	at bij.a(SourceFile:37)
	at avf.b(SourceFile:192)
	at avf.a(SourceFile:202)
	at avf.a(SourceFile:156)
	at avf.a(SourceFile:400)
	at avf.b(SourceFile:479)
	at avf.a(SourceFile:248)
	at avf.a(SourceFile:232)
	at avh.b(SourceFile:100)
	at avl.d(SourceFile:428)
	at avl.a(SourceFile:339)
	at awd.a(SourceFile:274)
	at avk.a(SourceFile:263)
	at bfb.b(SourceFile:718)
	at ats.S(SourceFile:686)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
	at b.a(SourceFile:330)
	at b.a(SourceFile:317)
	at bij.a(SourceFile:77)
	at bij.a(SourceFile:37)
	at avf.b(SourceFile:192)
	at avf.a(SourceFile:202)
	at avf.a(SourceFile:156)
	at avf.a(SourceFile:400)
	at avf.b(SourceFile:479)
	at avf.a(SourceFile:248)
	at avf.a(SourceFile:232)
	at avh.b(SourceFile:100)
	at avl.d(SourceFile:428)
	at avl.a(SourceFile:339)
	at awd.a(SourceFile:274)
	at avk.a(SourceFile:263)

-- Screen render details --
Details:
	Screen name: avk
	Mouse location: Scaled: (246, 207). Absolute: (739, 126)
	Screen size: Scaled: (456, 250). Absolute: (1366, 749). Scale factor of 3
Stacktrace:
	at bfb.b(SourceFile:718)
	at ats.S(SourceFile:686)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 1303576 bytes (1 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: 3955 (221480 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	Launched Version: 1.6.2
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2202, Intel
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: faithfull32.zip
	Current Language: English (UK)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-21970/8600169/