Hopper: java.lang.NullPointerException: Exception ticking world

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-1427753/

Crash:

java.lang.NullPointerException: Exception ticking world
	at mr.d(SourceFile:204)
	at ms.b(SourceFile:119)

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

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 14/02/26 18:53
Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
	at mr.d(SourceFile:204)
	at ms.b(SourceFile:119)
	at net.minecraft.server.MinecraftServer.v(SourceFile:504)
	at net.minecraft.server.MinecraftServer.u(SourceFile:443)
	at btq.u(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:359)
	at lh.run(SourceFile:618)


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

-- Head --
Stacktrace:
	at mr.d(SourceFile:204)
	at ms.b(SourceFile:119)

-- Affected level --
Details:
	Level name: GINJIROU
	All players: 1 total; [mv['ginjirou1004'/234, l='GINJIROU', x=120.63, y=65.00, z=249.42]]
	Chunk stats: ServerChunkCache: 621 Drop: 61
	Level seed: -1393211669619633308
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-200,64,256), Chunk: (at 8,4,0 in -13,16; contains blocks -208,0,256 to -193,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 303314 game time, 408821 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 96708 (now: false), thunder time: 146598 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.v(SourceFile:504)
	at net.minecraft.server.MinecraftServer.u(SourceFile:443)
	at btq.u(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:359)
	at lh.run(SourceFile:618)

-- System Details --
Details:
	Minecraft Version: 1.7.5
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 54554216 bytes (52 MB) / 226324480 bytes (215 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [mv['ginjirou1004'/234, l='GINJIROU', x=120.63, y=65.00, z=249.42]]
	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-1427753/66943771/