---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 7/7/13 1:51 AM
Description: Exception in server tick loop

java.lang.NullPointerException
	at alj.f(SourceFile:197)
	at hk.m(SourceFile:665)
	at net.minecraft.server.MinecraftServer.a(SourceFile:873)
	at bko.a(SourceFile:198)
	at ms.b(SourceFile:94)
	at net.minecraft.server.MinecraftServer.s(SourceFile:433)
	at bko.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at hf.run(SourceFile:582)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.6.1
	Operating System: Windows XP (x86) version 5.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 213595528 bytes (203 MB) / 466694144 bytes (445 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 15579 (872424 bytes; 0 MB) allocated, 1303 (72968 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 2, tcache: 0, allocated: 1, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1989 (111384 bytes; 0 MB) allocated, 148 (8288 bytes; 0 MB) used
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.