---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 5/21/13 12:59 PM
Description: Sending packet

java.lang.NullPointerException
	at ch.b(SourceFile:107)
	at ch.a(SourceFile:39)
	at jh.b(SourceFile:430)
	at gu.b(SourceFile:669)
	at gu.a(SourceFile:79)
	at bjj.b(SourceFile:73)
	at net.minecraft.server.MinecraftServer.r(SourceFile:480)
	at net.minecraft.server.MinecraftServer.q(SourceFile:397)
	at bjg.q(IntegratedServer.java:171)
	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:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at ch.b(SourceFile:107)
	at ch.a(SourceFile:39)

-- Packet being sent --
Details:
	Packet ID: 4
	Packet class: fh
Stacktrace:
	at jh.b(SourceFile:430)
	at gu.b(SourceFile:669)
	at gu.a(SourceFile:79)
	at bjj.b(SourceFile:73)
	at net.minecraft.server.MinecraftServer.r(SourceFile:480)
	at net.minecraft.server.MinecraftServer.q(SourceFile:397)
	at bjg.q(IntegratedServer.java:171)
	at net.minecraft.server.MinecraftServer.run(SourceFile:331)
	at gp.run(SourceFile:573)

-- System Details --
Details:
	Minecraft Version: 1.5.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.6.0_33, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 335460104 bytes (319 MB) / 646381568 bytes (616 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 207623 (11626888 bytes; 11 MB) allocated, 207623 (11626888 bytes; 11 MB) used
	Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
	IntCache: cache: 2, tcache: 0, allocated: 1, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 18356 (1027936 bytes; 0 MB) allocated, 18356 (1027936 bytes; 0 MB) used
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Very likely; Jar signature invalidated