---- Minecraft Crash Report ----
// Don't do that.

Time: 25.12.12 17:54
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -1
	at aaq.b(SourceFile:42)
	at aaq.a(SourceFile:27)
	at yc.<init>(SourceFile:145)
	at in.<init>(SourceFile:70)
	at bdz.a(SourceFile:70)
	at bdz.c(SourceFile:99)
	at net.minecraft.server.MinecraftServer.run(SourceFile:588)
	at fy.run(SourceFile:849)


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

-- System Details --
Details:
	Minecraft Version: 1.4.6
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_09, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 334178008 bytes (318 MB) / 535822336 bytes (511 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: ~~ERROR~~ NoClassDefFoundError: com/pclewis/mcpatcher/mod/TileOverride$1
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Very likely; Jar signature invalidated