---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 28/03/13 12:20
Description: Ticking screen

java.lang.NoClassDefFoundError: NoiseGeneratorOctaves2_173
	at aba.<init>(WorldChunkManager.java:53)
	at aba.<init>(WorldChunkManager.java:73)
	at acn.b(WorldProvider.java:71)
	at acn.a(WorldProvider.java:41)
	at aab.<init>(SourceFile:118)
	at bdt.<init>(SourceFile:36)
	at bdl.a(SourceFile:145)
	at dz.a(SourceFile:71)
	at ci.b(SourceFile:350)
	at bdl.d(SourceFile:95)
	at bdo.c(SourceFile:73)
	at net.minecraft.client.Minecraft.l(SourceFile:1105)
	at net.minecraft.client.Minecraft.K(SourceFile:574)
	at net.minecraft.client.Minecraft.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: NoiseGeneratorOctaves2_173
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 15 more


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

-- Head --
Stacktrace:
	at aba.<init>(WorldChunkManager.java:53)
	at aba.<init>(WorldChunkManager.java:73)
	at acn.b(WorldProvider.java:71)
	at acn.a(WorldProvider.java:41)
	at aab.<init>(SourceFile:118)
	at bdt.<init>(SourceFile:36)
	at bdl.a(SourceFile:145)
	at dz.a(SourceFile:71)
	at ci.b(SourceFile:350)
	at bdl.d(SourceFile:95)
	at bdo.c(SourceFile:73)

-- Affected screen --
Details:
	Screen name: bdo
Stacktrace:
	at net.minecraft.client.Minecraft.l(SourceFile:1105)
	at net.minecraft.client.Minecraft.K(SourceFile:574)
	at net.minecraft.client.Minecraft.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.5.1
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 438856240 bytes (418 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	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: 0, tallocated: 0
	LWJGL: 2.4.2
	OpenGL: Intel Bear Lake B GL version 1.4.0 - Build 8.14.10.1930, Intel
	Is Modded: Very likely; Jar signature invalidated
	Type: Client (map_client.txt)
	Texture Pack: Zambo's Texture.zip
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null