---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 1/4/13 6:52 PM
Description: Ticking memory connection

java.lang.NullPointerException
	at anu.f(SourceFile:247)
	at rx.b(SourceFile:68)
	at iq.k(SourceFile:482)
	at iq.i(SourceFile:467)
	at qx.j_(SourceFile:204)
	at iq.g(SourceFile:175)
	at iv.a(SourceFile:199)
	at eb.a(SourceFile:136)
	at cf.b(SourceFile:55)
	at iv.d(SourceFile:57)
	at iw.b(SourceFile:39)
	at beq.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.r(SourceFile:762)
	at net.minecraft.server.MinecraftServer.q(SourceFile:679)
	at ben.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:613)
	at fy.run(SourceFile:849)


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

-- System Details --
Details:
	Minecraft Version: 13w01a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_10, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 479298208 bytes (457 MB) / 891748352 bytes (850 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 196 (10976 bytes; 0 MB) allocated, 196 (10976 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 486 (27216 bytes; 0 MB) allocated, 486 (27216 bytes; 0 MB) used
	Player Count: 1 / 8; [iq['Nickfost'/0, l='world', x=1306.65, y=56.00, z=-166.81]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.