---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 12.12.12 20:12
Description: Exception while ticking a block

java.lang.IllegalStateException: Entity is already tracked!
	at ii.a(SourceFile:72)
	at ii.a(SourceFile:59)
	at ij.a(SourceFile:24)
	at xv.a(SourceFile:842)
	at in.a(SourceFile:581)
	at xv.d(SourceFile:834)
	at akg.l(SourceFile:55)
	at akg.b(SourceFile:35)
	at in.a(SourceFile:389)
	at in.b(SourceFile:136)
	at net.minecraft.server.MinecraftServer.r(SourceFile:743)
	at net.minecraft.server.MinecraftServer.q(SourceFile:686)
	at bdo.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:620)
	at fy.run(SourceFile:856)


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

-- Head --
Stacktrace:
	at ii.a(SourceFile:72)
	at ii.a(SourceFile:59)
	at ij.a(SourceFile:24)
	at xv.a(SourceFile:842)
	at in.a(SourceFile:581)
	at xv.d(SourceFile:834)
	at akg.l(SourceFile:55)
	at akg.b(SourceFile:35)

-- Block being ticked --
Details:
	Block type: ID #13 (tile.gravel // akd)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (-359,13,218), Chunk: (at 9,0,10 in -23,13; contains blocks -368,0,208 to -353,255,223), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Stacktrace:
	at in.a(SourceFile:389)
	at in.b(SourceFile:136)

-- Affected level --
Details:
	Level name: Mouse trap
	All players: 1 total; [iq['totalcomplexity@gmail.com'/243, l='Mouse trap', x=-209,50, y=72,00, z=176,50]]
	Chunk stats: ServerChunkCache: 625 Drop: 0
	Level seed: -638695812
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-216,64,168), Chunk: (at 8,4,8 in -14,10; contains blocks -224,0,160 to -209,255,175), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 298 game time, 298 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 60499 (now: false), thunder time: 76062 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.r(SourceFile:743)
	at net.minecraft.server.MinecraftServer.q(SourceFile:686)
	at bdo.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:620)
	at fy.run(SourceFile:856)

-- System Details --
Details:
	Minecraft Version: 1.4.5
	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: 320998064 bytes (306 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 11843 (663208 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1286 (72016 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [iq['totalcomplexity@gmail.com'/243, l='Mouse trap', x=-209,50, y=72,00, z=176,50]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.