---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 16.03.13 21:05
Description: Adding entity to track

java.lang.IllegalStateException: Entity is already tracked!
	at it.a(SourceFile:76)
	at it.a(SourceFile:55)
	at iv.a(SourceFile:24)
	at zv.a(SourceFile:867)
	at iz.a(SourceFile:635)
	at zv.d(SourceFile:859)
	at aah.a(SourceFile:138)
	at iz.b(SourceFile:119)
	at net.minecraft.server.MinecraftServer.r(SourceFile:454)
	at net.minecraft.server.MinecraftServer.q(SourceFile:397)
	at bja.q(SourceFile:122)
	at net.minecraft.server.MinecraftServer.run(SourceFile:331)
	at gp.run(SourceFile:573)


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 (ql)
	Entity ID: 346947
	Entity Name: Calmar
	Entity's Exact location: -378.50, 55.00, -666.50
	Entity's Block location: World: (-379,55,-667), Chunk: (at 5,3,5 in -24,-42; contains blocks -384,0,-672 to -369,255,-657), Region: (-1,-2; contains chunks -32,-64 to -1,-33, blocks -512,0,-1024 to -1,255,-513)
	Entity's Momentum: 0.00, 0.00, 0.00
Stacktrace:
	at it.a(SourceFile:76)
	at it.a(SourceFile:55)
	at iv.a(SourceFile:24)
	at zv.a(SourceFile:867)
	at iz.a(SourceFile:635)
	at zv.d(SourceFile:859)
	at aah.a(SourceFile:138)
	at iz.b(SourceFile:119)

-- Affected level --
Details:
	Level name: créa
	All players: 1 total; [jc['locarix'/152, l='créa', x=-443.40, y=188.66, z=-718.69]]
	Chunk stats: ServerChunkCache: 625 Drop: 0
	Level seed: 6522159680230944835
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-443,64,-715), Chunk: (at 5,4,5 in -28,-45; contains blocks -448,0,-720 to -433,255,-705), Region: (-1,-2; contains chunks -32,-64 to -1,-33, blocks -512,0,-1024 to -1,255,-513)
	Level time: 965837 game time, 1381101 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 60133 (now: false), thunder time: 114082 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.r(SourceFile:454)
	at net.minecraft.server.MinecraftServer.q(SourceFile:397)
	at bja.q(SourceFile:122)
	at net.minecraft.server.MinecraftServer.run(SourceFile:331)
	at gp.run(SourceFile:573)

-- System Details --
Details:
	Minecraft Version: 1.5
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_13, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 275688664 bytes (262 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 2849 (159544 bytes; 0 MB) allocated, 11 (616 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: 6786 (380016 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [jc['locarix'/152, l='créa', x=-443.40, y=188.66, z=-718.69]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.