Hopper: java.lang.ArrayIndexOutOfBoundsException: -100

java.lang.ArrayIndexOutOfBoundsException: -100
	at org.lwjgl.input.Keyboard.getKeyName(Keyboard.java:429)
	at bcw.a(SourceFile:967)
	at ef.a(SourceFile:48)
	at cn.b(SourceFile:64)

---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 19.09.13 17:58
Description: Unexpected error

java.lang.ArrayIndexOutOfBoundsException: -100
	at org.lwjgl.input.Keyboard.getKeyName(Keyboard.java:429)
	at bcw.a(SourceFile:967)
	at ef.a(SourceFile:48)
	at cn.b(SourceFile:64)
	at atv.k(SourceFile:1405)
	at atv.S(SourceFile:663)
	at atv.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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 bcw.a(SourceFile:967)
	at ef.a(SourceFile:48)
	at cn.b(SourceFile:64)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdi['Player'/252, l='MpServer', x=206,50, y=67,62, z=-95,50]]
	Chunk stats: MultiplayerChunkCache: 10
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (216,64,-92), Chunk: (at 8,4,4 in 13,-6; contains blocks 208,0,-96 to 223,255,-81), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 97 game time, 97 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: 4 total; [sc['Tintenfisch'/126, l='MpServer', x=179,50, y=61,34, z=-88,13], sc['Tintenfisch'/125, l='MpServer', x=181,94, y=60,34, z=-98,50], sc['Tintenfisch'/124, l='MpServer', x=182,16, y=61,34, z=-100,53], bdi['Player'/252, l='MpServer', x=206,50, y=67,62, z=-95,50]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bdd.a(SourceFile:284)
	at atv.b(SourceFile:1761)
	at atv.d(SourceFile:633)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows Vista (x86) version 6.0
	Java Version: 1.6.0_29, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Sun Microsystems Inc.
	Memory: 150303384 bytes (143 MB) / 264466432 bytes (252 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 10817 (605752 bytes; 0 MB) allocated, 10817 (605752 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	Launched Version: 1.6.4
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 3650 GL version 2.1.7656 Release, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: Deutsch (Deutschland)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used