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Minecraft has crashed!
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Minecraft has stopped running because it encountered a problem; Ticking entity

A full error report has been saved to C:\Users\User\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-15_00.33.34-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT eee778f9 --------
Full report at:
C:\Users\User\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-15_00.33.34-server.txt
Please show that file to Mojang, NOT just this screen!

Generated 11/15/12 12:33 AM

-- Head --
Stacktrace:
at ii.a(SourceFile:72)
at ii.a(SourceFile:50)
at ij.a(SourceFile:24)
at xv.a(SourceFile:842)
at in.a(SourceFile:581)
at xv.d(SourceFile:834)
at gm.a(SourceFile:369)
at lq.b(SourceFile:1492)
at px.b(SourceFile:201)
at amg.a(SourceFile:62)
at lq.D(SourceFile:652)
at lq.d(SourceFile:615)
at px.j_(SourceFile:67)
at xv.a(SourceFile:1317)
at in.a(SourceFile:451)
at xv.g(SourceFile:1296)

-- Entity being ticked --
Details:
Entity Type: Item (px)
Entity ID: 23438
Name: item.item.enderPearl
Exact location: 100.00, 50.13, 0.00
Block location: World: (100,50,0), Chunk: (at 4,3,0 in 6,0; contains blocks 96,0,0 to 111,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Momentum: 0.00, 0.00, 0.00
Stacktrace:
at xv.h(SourceFile:1195)
at in.h(SourceFile:363)

-- Affected level --
Details:
Level name: Birch City
All players: 1 total; [iq['inglipurr'/567, l='Birch City', x=100.00, y=49.00, z=0.00]]
Chunk stats: ServerChunkCache: 442 Drop: 0
Level seed: -3036510352135032692
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 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: ~~ERROR~~ NullPointerException: null
Stacktrace:
at net.minecraft.server.MinecraftServer.r(SourceFile:751)
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: 1.4.4
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.6.0_37, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
Memory: 350985040 bytes (334 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 3484 (195104 bytes; 0 MB) allocated, 2228 (124768 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: 2872 (160832 bytes; 0 MB) allocated, 1445 (80920 bytes; 0 MB) used
Player Count: 1 / 8; [iq['inglipurr'/567, l='Birch City', x=100.00, y=49.00, z=0.00]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

java.lang.IllegalStateException: Entity is already tracked!
at ii.a(SourceFile:72)
at ii.a(SourceFile:50)
at ij.a(SourceFile:24)
at xv.a(SourceFile:842)
at in.a(SourceFile:581)
at xv.d(SourceFile:834)
at gm.a(SourceFile:369)
at lq.b(SourceFile:1492)
at px.b(SourceFile:201)
at amg.a(SourceFile:62)
at lq.D(SourceFile:652)
at lq.d(SourceFile:615)
at px.j_(SourceFile:67)
at xv.a(SourceFile:1317)
at in.a(SourceFile:451)
at xv.g(SourceFile:1296)
at xv.h(SourceFile:1195)
at in.h(SourceFile:363)
at net.minecraft.server.MinecraftServer.r(SourceFile:751)
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)
--- END ERROR REPORT d00e66e7 ----------