Hopper: java.lang.NullPointerException

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-17827/

Crash:

java.lang.NullPointerException
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:177)
	at arv.w_(SourceFile:300)
	at abv.a(SourceFile:1658)
	at adq.e(SourceFile:540)
	at adq.a(SourceFile:397)
	at abv.f(SourceFile:306)
	at aiq.a(SourceFile:590)
	at ajf.a(SourceFile:1510)
	at ais.a(SourceFile:29)
	at aim.a(SourceFile:72)
	at aen.a(SourceFile:125)
	at jq.a(SourceFile:168)
	at adq.a(SourceFile:723)
	at jq.c(SourceFile:105)
	at jq.d(SourceFile:116)
	at abv.e(SourceFile:289)

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

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

Time: 8/8/13 4:02 PM
Description: Exception getting block type in world

java.lang.NullPointerException
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:177)
	at arv.w_(SourceFile:300)
	at abv.a(SourceFile:1658)
	at adq.e(SourceFile:540)
	at adq.a(SourceFile:397)
	at abv.f(SourceFile:306)
	at aiq.a(SourceFile:590)
	at ajf.a(SourceFile:1510)
	at ais.a(SourceFile:29)
	at aim.a(SourceFile:72)
	at aen.a(SourceFile:125)
	at jq.a(SourceFile:168)
	at adq.a(SourceFile:723)
	at jq.c(SourceFile:105)
	at jq.d(SourceFile:116)
	at abv.e(SourceFile:289)
	at abv.a(SourceFile:213)
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:186)
	at arv.h(SourceFile:205)
	at abv.h(SourceFile:1267)
	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 arv.a(SourceFile:197)
	at arv.j(SourceFile:177)
	at arv.w_(SourceFile:300)
	at abv.a(SourceFile:1658)
	at adq.e(SourceFile:540)
	at adq.a(SourceFile:397)
	at abv.f(SourceFile:306)
	at aiq.a(SourceFile:590)
	at ajf.a(SourceFile:1510)
	at ais.a(SourceFile:29)
	at aim.a(SourceFile:72)
	at aen.a(SourceFile:125)
	at jq.a(SourceFile:168)
	at adq.a(SourceFile:723)
	at jq.c(SourceFile:105)
	at jq.d(SourceFile:116)
	at abv.e(SourceFile:289)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (271,0,192), Chunk: (at 15,0,0 in 16,12; contains blocks 256,0,192 to 271,255,207), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
	at abv.a(SourceFile:213)
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:186)
	at arv.h(SourceFile:205)

-- Tile entity being ticked --
Details:
	Name: Chest // arv
	Block type: ID #54 (tile.chest // anh)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (271,0,191), Chunk: (at 15,0,15 in 16,11; contains blocks 256,0,176 to 271,255,191), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Actual block type: ID #54 (tile.chest // anh)
	Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
	at abv.h(SourceFile:1267)
	at jr.h(SourceFile:364)

-- Affected level --
Details:
	Level name: yroeuvhvfbuvahbfud
	All players: 1 total; [ju['sonni2526'/6258, l='yroeuvhvfbuvahbfud', x=1066.50, y=0.88, z=340.50]]
	Chunk stats: ServerChunkCache: 1421 Drop: 0
	Level seed: -948416100
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 2;54;1;village
	Level spawn location: World: (1067,4,348), Chunk: (at 11,0,12 in 66,21; contains blocks 1056,0,336 to 1071,255,351), Region: (2,0; contains chunks 64,0 to 95,31, blocks 1024,0,0 to 1535,255,511)
	Level time: 94 game time, 94 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 52584 (now: false), thunder time: 165439 (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 7 (x86) version 6.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 154950088 bytes (147 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 729 (40824 bytes; 0 MB) allocated, 547 (30632 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 110 (6160 bytes; 0 MB) allocated, 92 (5152 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['sonni2526'/6258, l='yroeuvhvfbuvahbfud', x=1066.50, y=0.88, z=340.50]]
	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-17827/1468522/