Hopper: java.lang.NullPointerException aqh.a(SourceFile:128)

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-5028/

Crash:

java.lang.NullPointerException
	at aqh.a(SourceFile:128)
	at adq.a(SourceFile:368)
	at abv.f(SourceFile:306)
	at abq.a(SourceFile:178)
	at jr.a(SourceFile:669)
	at abv.a(SourceFile:1555)
	at tb.d(SourceFile:85)
	at tb.l_(SourceFile:75)
	at abv.a(SourceFile:1349)
	at jr.a(SourceFile:479)
	at abv.g(SourceFile:1327)

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

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 03/08/13 18:46
Description: Ticking entity

java.lang.NullPointerException
	at aqh.a(SourceFile:128)
	at adq.a(SourceFile:368)
	at abv.f(SourceFile:306)
	at abq.a(SourceFile:178)
	at jr.a(SourceFile:669)
	at abv.a(SourceFile:1555)
	at tb.d(SourceFile:85)
	at tb.l_(SourceFile:75)
	at abv.a(SourceFile:1349)
	at jr.a(SourceFile:479)
	at abv.g(SourceFile:1327)
	at abv.h(SourceFile:1234)
	at jr.h(SourceFile:364)
	at net.minecraft.server.MinecraftServer.t(SourceFile:470)
	at net.minecraft.server.MinecraftServer.s(SourceFile:405)
	at bkw.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at hh.run(SourceFile:582)


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

-- Head --
Stacktrace:
	at aqh.a(SourceFile:128)
	at adq.a(SourceFile:368)
	at abv.f(SourceFile:306)
	at abq.a(SourceFile:178)
	at jr.a(SourceFile:669)
	at abv.a(SourceFile:1555)
	at tb.d(SourceFile:85)
	at tb.l_(SourceFile:75)
	at abv.a(SourceFile:1349)
	at jr.a(SourceFile:479)
	at abv.g(SourceFile:1327)

-- Entity being ticked --
Details:
	Entity Type: PrimedTnt (tb)
	Entity ID: 135406
	Entity Name: Block of TNT
	Entity's Exact location: 116.70, 64.49, 281.45
	Entity's Block location: World: (116,64,281), Chunk: (at 4,4,9 in 7,17; contains blocks 112,0,272 to 127,255,287), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0.00, -0.00, -0.00
Stacktrace:
	at abv.h(SourceFile:1234)
	at jr.h(SourceFile:364)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [ju['Beastly_snipz'/124599, l='New World', x=109.30, y=64.00, z=291.70]]
	Chunk stats: ServerChunkCache: 593 Drop: 0
	Level seed: 4581981013013128684
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (108,64,256), Chunk: (at 12,4,0 in 6,16; contains blocks 96,0,256 to 111,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 93761 game time, 94581 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 97526 (now: false), thunder time: 77290 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.t(SourceFile:470)
	at net.minecraft.server.MinecraftServer.s(SourceFile:405)
	at bkw.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at hh.run(SourceFile:582)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 14716152 bytes (14 MB) / 307220480 bytes (292 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 6143 (344008 bytes; 0 MB) allocated, 4519 (253064 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: 2879 (161224 bytes; 0 MB) allocated, 2879 (161224 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['Beastly_snipz'/124599, l='New World', x=109.30, y=64.00, z=291.70]]
	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-5028/291844/