Hopper: java.lang.IllegalStateException: Failed to add player. mp['HoodieD1'/218, l='LOL', x=-286.69, y=66.79, z=227.74] already is in chunk -12, 8

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-772242/

Crash:

java.lang.IllegalStateException: Failed to add player. mp['HoodieD1'/218, l='LOL', x=-286.69, y=66.79, z=227.74] already is in chunk -12, 8
	at mk.a(SourceFile:37)
	at mj.d(SourceFile:346)
	at lg.d(SourceFile:215)
	at na.a(SourceFile:280)
	at iu.a(SourceFile:137)
	at iw.a(SourceFile:20)
	at ef.a(SourceFile:164)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 05/12/13 15:00
Description: Ticking memory connection

java.lang.IllegalStateException: Failed to add player. mp['The_DevilKid'/211, l='Survival', x=-8.69, y=72.00, z=178.70] already is in chunk -4, 14
	at mk.a(SourceFile:37)
	at mj.d(SourceFile:346)
	at lg.d(SourceFile:215)
	at na.a(SourceFile:280)
	at iu.a(SourceFile:137)
	at iw.a(SourceFile:20)
	at ef.a(SourceFile:164)
	at mv.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:528)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at bti.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)


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

-- Head --
Stacktrace:
	at mk.a(SourceFile:37)
	at mj.d(SourceFile:346)
	at lg.d(SourceFile:215)
	at na.a(SourceFile:280)
	at iu.a(SourceFile:137)
	at iw.a(SourceFile:20)
	at ef.a(SourceFile:164)

-- Ticking connection --
Details:
	Connection: ef@33bf31fe
Stacktrace:
	at mv.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:528)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at bti.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)

-- System Details --
Details:
	Minecraft Version: 13w49a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 139973552 bytes (133 MB) / 501547008 bytes (478 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 4095 (229320 bytes; 0 MB) allocated, 3842 (215152 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2487 (139272 bytes; 0 MB) allocated, 1799 (100744 bytes; 0 MB) used
	Player Count: 1 / 8; [mp['The_DevilKid'/211, l='Survival', x=-8.69, y=72.00, z=178.70]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-772242/35813813/