Hopper: java.lang.NullPointerException

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-247571/

Crash:

java.lang.NullPointerException
	at tq.a(SourceFile:133)
	at tq.k(SourceFile:120)
	at tq.h(SourceFile:95)
	at adg.a(SourceFile:1361)
	at kn.a(SourceFile:477)
	at adg.g(SourceFile:1339)

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

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 27.09.13 18:52
Description: Ticking entity

java.lang.NullPointerException
	at tq.a(SourceFile:133)
	at tq.k(SourceFile:120)
	at tq.h(SourceFile:95)
	at adg.a(SourceFile:1361)
	at kn.a(SourceFile:477)
	at adg.g(SourceFile:1339)
	at adg.h(SourceFile:1246)
	at kn.h(SourceFile:362)
	at net.minecraft.server.MinecraftServer.u(SourceFile:476)
	at net.minecraft.server.MinecraftServer.t(SourceFile:411)
	at bou.t(SourceFile:121)
	at net.minecraft.server.MinecraftServer.run(SourceFile:346)
	at jc.run(SourceFile:582)


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

-- Head --
Stacktrace:
	at tq.a(SourceFile:133)
	at tq.k(SourceFile:120)
	at tq.h(SourceFile:95)
	at adg.a(SourceFile:1361)
	at kn.a(SourceFile:477)
	at adg.g(SourceFile:1339)

-- Entity being ticked --
Details:
	Entity Type: Item (tq)
	Entity ID: 48824
	Entity Name: ~~ERROR~~ NullPointerException: null
	Entity's Exact location: 28,16, 66,38, 24,20
	Entity's Block location: World: (28,66,24), Chunk: (at 12,4,8 in 1,1; contains blocks 16,0,16 to 31,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: -0,25, -0,01, 0,20
Stacktrace:
	at adg.h(SourceFile:1246)
	at kn.h(SourceFile:362)

-- Affected level --
Details:
	Level name: Тесты
	All players: 1 total; [kq['_Vanver_'/11, l='Тесты', x=49,04, y=76,62, z=20,70]]
	Chunk stats: ServerChunkCache: 556 Drop: 0
	Level seed: 1568106223658688295
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 2;7,3x1,52x24;2;
	Level spawn location: World: (0,64,0), Chunk: (at 0,4,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 447813 game time, 6002 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 156839 (now: false), thunder time: 157173 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.u(SourceFile:476)
	at net.minecraft.server.MinecraftServer.t(SourceFile:411)
	at bou.t(SourceFile:121)
	at net.minecraft.server.MinecraftServer.run(SourceFile:346)
	at jc.run(SourceFile:582)

-- System Details --
Details:
	Minecraft Version: 13w39b
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 33539064 bytes (31 MB) / 326471680 bytes (311 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 427 (23912 bytes; 0 MB) allocated, 233 (13048 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 33 (1848 bytes; 0 MB) allocated, 27 (1512 bytes; 0 MB) used
	Player Count: 1 / 8; [kq['_Vanver_'/11, l='Тесты', x=49,04, y=76,62, z=20,70]]
	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-247571/14611627/