when i start up minecraft its says that there is an error report 44b8e6ba: crash-2013-07-01_21.51.18-client.txt

Minecraft has crashed!      
      ----------------------      

Minecraft has stopped running because it encountered a problem; Unexpected error

A full error report has been saved to C:\Users\jony0_000\AppData\Roaming\.minecraft\crash-reports\crash-2013-07-01_21.51.18-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(



--- BEGIN ERROR REPORT 44b8e6ba --------
Full report at:
C:\Users\jony0_000\AppData\Roaming\.minecraft\crash-reports\crash-2013-07-01_21.51.18-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 7/1/13 9:51 PM

-- System Details --
Details:
	Minecraft Version: 1.5.2
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 446232272 bytes (425 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: [com.prupe.mcpatcher.MCPatcherUtils, Config, MCLogger, ...], [com.prupe.mcpatcher.mod.ColorizeItem, AAHelper, TessellatorUtils, ...]
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.4.2
	OpenGL: AMD Radeon HD 7640G GL version 4.2.11764 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Very likely; Jar signature invalidated
	Type: Client (map_client.txt)
	Texture Pack: Monkeyfarms_Custom-JohnSmith 1.5.zip
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

java.lang.IllegalArgumentException: ByteBuffer is not direct
	at org.lwjgl.BufferChecks.checkDirect(BufferChecks.java:105)
	at org.lwjgl.BufferChecks.checkBuffer(BufferChecks.java:164)
	at org.lwjgl.opengl.GL11.glTexSubImage2D(GL11.java:2908)
	at bio.b(SourceFile:333)
	at bil.l(SourceFile:139)
	at bir.c(SourceFile:166)
	at bge.b(SourceFile:294)
	at net.minecraft.client.Minecraft.l(SourceFile:1060)
	at net.minecraft.client.Minecraft.K(SourceFile:574)
	at net.minecraft.client.Minecraft.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT d0130c25 ----------