---- Minecraft Crash Report ----
// I feel sad now :(

Time: 1/30/13 9:30 PM
Description: Adding entity to track

java.lang.IllegalStateException: Entity is already tracked!
	at ir.a(SourceFile:76)
	at ir.a(SourceFile:55)
	at it.a(SourceFile:24)
	at zh.a(SourceFile:850)
	at ix.a(SourceFile:621)
	at zh.d(SourceFile:842)
	at zt.a(SourceFile:138)
	at ix.b(SourceFile:119)
	at net.minecraft.server.MinecraftServer.r(SourceFile:452)
	at net.minecraft.server.MinecraftServer.q(SourceFile:395)
	at bhw.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:329)
	at gn.run(SourceFile:565)


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

-- Entity To Track --
Details:
	Tracking range: 64 blocks
	Update interval: Once per 3 ticks
	Entity Type: Squid (qc)
	Entity ID: 5376892
	Entity Name: Squid
	Entity's Exact location: 744.50, 61.00, 55.50
	Entity's Block location: World: (744,61,55), Chunk: (at 8,3,7 in 46,3; contains blocks 736,0,48 to 751,255,63), Region: (1,0; contains chunks 32,0 to 63,31, blocks 512,0,0 to 1023,255,511)
	Entity's Momentum: 0.00, 0.00, 0.00
Stacktrace:
	at ir.a(SourceFile:76)
	at ir.a(SourceFile:55)
	at it.a(SourceFile:24)
	at zh.a(SourceFile:850)
	at ix.a(SourceFile:621)
	at zh.d(SourceFile:842)
	at zt.a(SourceFile:138)
	at ix.b(SourceFile:119)

-- Affected level --
Details:
	Level name: w34 (L&R)
	All players: 1 total; [ja['RandalOneL'/37, l='w34 (L&R)', x=691.52, y=195.14, z=57.30]]
	Chunk stats: ServerChunkCache: 1067 Drop: 0
	Level seed: -2201826965861477985
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-140,64,256), Chunk: (at 4,4,0 in -9,16; contains blocks -144,0,256 to -129,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 12480848 game time, 2885377 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 15096369 (now: false), thunder time: 15096369 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.r(SourceFile:452)
	at net.minecraft.server.MinecraftServer.q(SourceFile:395)
	at bhw.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:329)
	at gn.run(SourceFile:565)

-- System Details --
Details:
	Minecraft Version: 13w04a
	Operating System: Mac OS X (x86_64) version 10.8.2
	Java Version: 1.6.0_37, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 198386904 bytes (189 MB) / 554369024 bytes (528 MB) up to 1069416448 bytes (1019 MB)
	JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
	AABB Pool Size: 9339 (522984 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 7430 (416080 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [ja['RandalOneL'/37, l='w34 (L&R)', x=691.52, y=195.14, z=57.30]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.