Hopper: java.lang.NullPointerException alo.a(SourceFile:143)

java.lang.NullPointerException
	at alo.a(SourceFile:143)
	at alo.e(SourceFile:126)
	at awe.a(SourceFile:169)
	at auu.a(SourceFile:39)
	at awb.a(SourceFile:69)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 4.8.2013 19:17
Description: Updating screen events

java.lang.NullPointerException
	at alo.a(SourceFile:143)
	at alo.e(SourceFile:126)
	at awe.a(SourceFile:169)
	at auu.a(SourceFile:39)
	at awb.a(SourceFile:69)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)
	at ats.k(SourceFile:1158)
	at ats.S(SourceFile:663)
	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 alo.a(SourceFile:143)
	at alo.e(SourceFile:126)
	at awe.a(SourceFile:169)
	at auu.a(SourceFile:39)
	at awb.a(SourceFile:69)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)

-- Affected screen --
Details:
	Screen name: auu
Stacktrace:
	at ats.k(SourceFile:1158)
	at ats.S(SourceFile:663)
	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 XP (x86) version 5.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 261154384 bytes (249 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: 0 (0 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: ATI Radeon HD 2400 Series GL version 3.3.11631 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Jungle Ruins 11.zip
	Current Language: suomi (FI)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null