Crash Report

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

Time: 13年4月4日 下午2:23
Description: Manually triggered debug crash

java.lang.Throwable
	at net.minecraft.client.Minecraft.l(SourceFile:1164)
	at net.minecraft.client.Minecraft.K(SourceFile:574)
	at net.minecraft.client.Minecraft.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)


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

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdw['kc_kennylau'/0, l='MpServer', x=1882.76, y=20.62, z=514.61]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options:
	Level spawn location: World: (1837,4,478), Chunk: (at 13,0,14 in 114,29; contains blocks 1824,0,464 to 1839,255,479), Region: (3,0; contains chunks 96,0 to 127,31, blocks 1536,0,0 to 2047,255,511)
	Level time: 936908 game time, 365917 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: true), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 1 total; [bdw['kc_kennylau'/0, l='MpServer', x=1882.76, y=20.62, z=514.61]]
	Retry entities: 0 total; []
Stacktrace:
	at bdt.a(SourceFile:282)
	at net.minecraft.client.Minecraft.b(SourceFile:1881)
	at net.minecraft.client.Minecraft.run(SourceFile:535)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.5.1
	Operating System: Windows Vista (x86) version 6.0
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 847301632 bytes (808 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms1024m -Xmx1024m
	AABB Pool Size: 9256 (518336 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.8.5
	OpenGL: Intel Cantiga GL version 2.0.0 - Build 7.15.10.1591, Intel
	Is Modded: Very likely; Jar signature invalidated
	Type: Client (map_client.txt)
	Texture Pack: oCd pack 1.5 by disco
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 297 (16632 bytes; 0 MB) allocated, 18 (1008 bytes; 0 MB) used