Minecraft Crash Report

// Oops.

Time: 26.05.13 20:58
Description: Exception in world tick

java.lang.ArrayIndexOutOfBoundsException: -96
	at org.lwjgl.input.Keyboard.getKeyName(Keyboard.java:429)
	at bbf.a(SourceFile:627)
	at fc.a(SourceFile:45)
	at ck.b(SourceFile:356)
	at bbf.d(SourceFile:95)
	at bbn.b(SourceFile:58)
	at asx.k(SourceFile:1387)
	at asx.R(SourceFile:651)
	at asx.d(SourceFile:607)
	at net.minecraft.client.main.Main.main(SourceFile:78)


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

-- Head --
Stacktrace:
	at org.lwjgl.input.Keyboard.getKeyName(Keyboard.java:429)
	at bbf.a(SourceFile:627)
	at fc.a(SourceFile:45)
	at ck.b(SourceFile:356)
	at bbf.d(SourceFile:95)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bbq['Crash333'/5083, l='MpServer', x=183,55, y=75,62, z=258,96]]
	Chunk stats: MultiplayerChunkCache: 289
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 3637099 game time, 460628 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 162 total; [rh['Schaf'/8262