CameraObscura Minecraft crash

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 21/12/13 11:36
Description: Unexpected error

java.lang.NullPointerException
	at avv.a(SourceFile:44)
	at bfj.a(SourceFile:312)
	at bfe.b(EntityRenderer.java:776)
	at bfe.a(EntityRenderer.java:1654)
	at bfe.b(EntityRenderer.java:1115)
	at atv.S(SourceFile:686)
	at atv.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 avv.a(SourceFile:44)
	at bfj.a(SourceFile:312)
	at bfe.b(EntityRenderer.java:776)
	at bfe.a(EntityRenderer.java:1654)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdi['stuffer999'/89, l='MpServer', x=537.70, y=136.12, z=444.78]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 02 - largeBiomes, ver 0. Features enabled: false
	Level generator options:
	Level spawn location: World: (534,134,453), Chunk: (at 6,8,5 in 33,28; contains blocks 528,0,448 to 543,255,463), Region: (1,0; contains chunks 32,0 to 63,31, blocks 512,0,0 to 1023,255,511)
	Level time: 185575 game time, 30000 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 6 total; [bdi['stuffer999'/89, l='MpServer', x=537.70, y=136.12, z=444.78], od['entity.ItemFrame.name'/64, l='MpServer', x=535.06, y=137.50, z=446.50], od['entity.ItemFrame.name'/66, l='MpServer', x=535.06, y=137.50, z=442.50], od['entity.ItemFrame.name'/67, l='MpServer', x=535.06, y=137.50, z=443.50], od['entity.ItemFrame.name'/63, l='MpServer', x=535.06, y=137.50, z=445.50], od['entity.ItemFrame.name'/62, l='MpServer', x=535.06, y=137.50, z=444.50]]
	Retry entities: 0 total; []
	Server brand: craftbukkit
	Server type: Non-integrated multiplayer server
Stacktrace:
	at bdd.a(SourceFile:284)
	at atv.b(SourceFile:1761)
	at atv.d(SourceFile:633)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.6.0_31, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 109088584 bytes (104 MB) / 287899648 bytes (274 MB) up to 1908932608 bytes (1820 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G
	AABB Pool Size: 143 (8008 bytes; 0 MB) allocated, 61 (3416 bytes; 0 MB) used
	Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.4M
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics Family GL version 3.0.0 - Build 8.15.10.2353, Intel
	Is Modded: Very likely; Jar signature invalidated
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 137 (7672 bytes; 0 MB) allocated, 74 (4144 bytes; 0 MB) used