Hopper: java.lang.IndexOutOfBoundsException: Index: 2, Size: 1

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-465800/

Crash:

java.lang.IndexOutOfBoundsException: Index: 2, Size: 1
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at bgg.b(SourceFile:35)
	at bgb.a(SourceFile:324)
	at bgb.a(SourceFile:258)
	at bcd.l(SourceFile:258)
	at bcd.k(SourceFile:217)

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

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

Time: 2013-10-25 16:56
Description: Updating screen events

java.lang.IndexOutOfBoundsException: Index: 2, Size: 1
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at bgg.b(SourceFile:35)
	at bgb.a(SourceFile:324)
	at bgb.a(SourceFile:258)
	at bcd.l(SourceFile:258)
	at bcd.k(SourceFile:217)
	at azd.o(SourceFile:1303)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	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.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at bgg.b(SourceFile:35)
	at bgb.a(SourceFile:324)
	at bgb.a(SourceFile:258)
	at bcd.l(SourceFile:258)
	at bcd.k(SourceFile:217)

-- Affected screen --
Details:
	Screen name: bgb
Stacktrace:
	at azd.o(SourceFile:1303)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	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: 55150320 bytes (52 MB) / 114208768 bytes (108 MB) up to 1069416448 bytes (1019 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: 1.7.2
	LWJGL: 2.9.1
	OpenGL: NVIDIA GeForce 320M OpenGL Engine GL version 2.1 NVIDIA-8.12.47 310.40.00.05f01, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: Svenska (Sverige)
	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-465800/21374304/