[Resolvido]Erro Minecraft has crashed! Me ajudem por favor

eu tava no minecraft quando derrepente avistei uma esmeralda e quando cavei perto apareceu isso abaixo depois fechei o minecraft abri denovo e quando fui cavar deu o mesmo problema tentei várias vezes e só ta dando esse problema me ajudem por favor
DETALHE: esse erro só ta dando no server aurora no region ta normal

Minecraft has crashed!

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Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Documents and Settings\Administrador\Desktop\Minecraft\craftlandia\CraftLandia\data\.minecraft\crash-reports\crash-2012-09-02_01.44.41-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT 2b9ce836 --------
Generated 02/09/12 01:44

- Minecraft Version: 1.3.1
- Operating System: Windows XP (x86) version 5.1
- Java Version: 1.6.0_04, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
- Memory: 486609552 bytes (464 MB) / 532807680 bytes (508 MB) up to 1065484288 bytes (1016 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: Intel Bear Lake B GL version 1.4.0 - Build 7.15.10.4990, Intel
- Is Modded: Probably not
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- World MpServer Entities: 1 total; [atf['MarcosCruzeta'/2913220, l='MpServer', x=248,68, y=30,62, z=661,40]]
- World MpServer Players: 1 total; [atf['MarcosCruzeta'/2913220, l='MpServer', x=248,68, y=30,62, z=661,40]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 49
- Forced Entities: 2 total; [atf['MarcosCruzeta'/2913220, l='MpServer', x=248,68, y=30,62, z=661,40], ni['item.tile.stonebrick'/2913221, l='MpServer', x=248,88, y=30,13, z=662,88]]
- Retry Entities: 0 total; []

java.lang.ArrayIndexOutOfBoundsException: -127
at wl.a(SourceFile:57)
at wk.a(SourceFile:362)
at uo.a(SourceFile:261)
at uo.c(SourceFile:250)
at uo.d(SourceFile:332)
at atc.g(SourceFile:175)
at asu.a(SourceFile:449)
at ee.a(SourceFile:44)
at bb.b(SourceFile:333)
at asu.d(SourceFile:81)
at atc.b(SourceFile:51)
at net.minecraft.client.Minecraft.l(SourceFile:1261)
at net.minecraft.client.Minecraft.J(SourceFile:583)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 1431d585 ----------

 

gente desculpa por criar o tópico eu cavei a esmeralda mesmo ai voltou ao normal coloca tag resolvido ai algum mod.