[MC-40603] 13w47c Crashes at startup on Mac

Minecraft launches, but it crashes before the Mojang logo, and the only reason I'm posting this again is because no report I've seen has the same error report as me. It seems to be some sort of Twitch.tv related error. I tried launching the game both before and after I linked a Twitch account to my Mojang account, and it still has the same error.

Here's the error report:

---- Minecraft Crash Report ----
// Oops.

Time: 11/21/13 4:13 PM
Description: Initializing game

java.lang.UnsatisfiedLinkError: /Users/jpelster/Library/Application Support/minecraft/versions/13w47c/13w47c-natives-1385079192096787000/libtwitchsdk.dylib:  Library not loaded: /System/Library/Frameworks/AVFoundation.framework/Versions/A/AVFoundation   Referenced from: /Users/jpelster/Library/Application Support/minecraft/versions/13w47c/13w47c-natives-1385079192096787000/libtwitchsdk.dylib   Reason: image not found
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1833)
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1756)
	at java.lang.Runtime.loadLibrary0(Runtime.java:823)
	at java.lang.System.loadLibrary(System.java:1044)
	at tv.twitch.StandardCoreAPI.<init>(StandardCoreAPI.java:12)
	at bui.<init>(SourceFile:663)
	at buw.<init>(SourceFile:62)
	at azg.ab(SourceFile:385)
	at azg.e(SourceFile:706)
	at net.minecraft.client.main.Main.main(SourceFile:151)


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

-- Head --
Stacktrace:
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1833)
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1756)
	at java.lang.Runtime.loadLibrary0(Runtime.java:823)
	at java.lang.System.loadLibrary(System.java:1044)
	at tv.twitch.StandardCoreAPI.<init>(StandardCoreAPI.java:12)
	at bui.<init>(SourceFile:663)
	at buw.<init>(SourceFile:62)
	at azg.ab(SourceFile:385)

-- Initialization --
Details:
Stacktrace:
	at azg.e(SourceFile:706)
	at net.minecraft.client.main.Main.main(SourceFile:151)

-- System Details --
Details:
	Minecraft Version: 13w47c
	Operating System: Mac OS X (x86_64) version 10.6.8
	Java Version: 1.6.0_65, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 59774152 bytes (57 MB) / 85000192 bytes (81 MB) up to 2143158272 bytes (2043 MB)
	JVM Flags: 1 total; -Xmx2G
	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: 13w47c
	LWJGL: 2.9.1
	OpenGL: NVIDIA GeForce 9400 OpenGL Engine GL version 2.1 NVIDIA-1.6.36, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: ~~ERROR~~ NullPointerException: null
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
	Anisotropic Filtering: Off (1)