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

Time: 29.06.13 10:48
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:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.6.1
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_09, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 12403842008 bytes (11829 MB) / 15898116096 bytes (15161 MB) up to 15898116096 bytes (15161 MB)
	JVM Flags: 2 total; -Xmx16184M -Xms16184M
	AABB Pool Size: 152129 (8519224 bytes; 8 MB) allocated, 0 (0 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: 32047280 (1794647680 bytes; 1711 MB) allocated, 0 (0 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.