Hopper: java.lang.NullPointerException (SourceFile:197)

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-26425/

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:726)
	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 ----
// Sorry :(

Time: 8/9/13 8:14 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:726)
	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:183)
	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:726)
	at jq.c(SourceFile:105)
	at jq.d(SourceFile:116)
	at abv.e(SourceFile:289)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (496,0,-2257), Chunk: (at 0,0,15 in 31,-142; contains blocks 496,0,-2272 to 511,255,-2257), Region: (0,-5; contains chunks 0,-160 to 31,-129, blocks 0,0,-2560 to 511,255,-2049)
Stacktrace:
	at abv.a(SourceFile:213)
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:183)
	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: (496,0,-2256), Chunk: (at 0,0,0 in 31,-141; contains blocks 496,0,-2256 to 511,255,-2241), Region: (0,-5; contains chunks 0,-160 to 31,-129, blocks 0,0,-2560 to 511,255,-2049)
	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: farmvill
	All players: 1 total; [ju['ste_squarepants'/32, l='farmvill', x=361.69, y=12.02, z=-1670.98]]
	Chunk stats: ServerChunkCache: 3432 Drop: 0
	Level seed: 3459732722286353475
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 2;54,2x3,2;1;village
	Level spawn location: World: (678,4,-1787), Chunk: (at 6,0,5 in 42,-112; contains blocks 672,0,-1792 to 687,255,-1777), Region: (1,-4; contains chunks 32,-128 to 63,-97, blocks 512,0,-2048 to 1023,255,-1537)
	Level time: 831 game time, 831 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 152397 (now: false), thunder time: 155579 (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: Mac OS X (x86_64) version 10.7.5
	Java Version: 1.6.0_41, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 80707640 bytes (76 MB) / 1006108672 bytes (959 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 31597 (1769432 bytes; 1 MB) allocated, 948 (53088 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: 1855 (103880 bytes; 0 MB) allocated, 204 (11424 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['ste_squarepants'/32, l='farmvill', x=361.69, y=12.02, z=-1670.98]]
	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-26425/1656890/