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

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-39211/

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:729)
	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 ----
// Oops.

Time: 8/14/13 2:27 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:729)
	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:177)
	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:729)
	at jq.c(SourceFile:105)
	at jq.d(SourceFile:116)
	at abv.e(SourceFile:289)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (-1393,5,-817), Chunk: (at 15,0,15 in -88,-52; contains blocks -1408,0,-832 to -1393,255,-817), Region: (-3,-2; contains chunks -96,-64 to -65,-33, blocks -1536,0,-1024 to -1025,255,-513)
Stacktrace:
	at abv.a(SourceFile:213)
	at arv.a(SourceFile:197)
	at arv.j(SourceFile:177)
	at arv.h(SourceFile:205)

-- Tile entity being ticked --
Details:
	Name: Chest // arv
	Block type: ID #54 (tile.chest // anh)
	Block data value: 5 / 0x5 / 0b0101
	Block location: World: (-1392,5,-817), Chunk: (at 0,0,15 in -87,-52; contains blocks -1392,0,-832 to -1377,255,-817), Region: (-3,-2; contains chunks -96,-64 to -65,-33, blocks -1536,0,-1024 to -1025,255,-513)
	Actual block type: ID #54 (tile.chest // anh)
	Actual block data value: 5 / 0x5 / 0b0101
Stacktrace:
	at abv.h(SourceFile:1267)
	at jr.h(SourceFile:364)

-- Affected level --
Details:
	Level name: Kingdom
	All players: 1 total; [ju['enderwiggin123'/1006, l='Kingdom', x=-2684.74, y=4.00, z=-450.61]]
	Chunk stats: ServerChunkCache: 3991 Drop: 0
	Level seed: 6220972118448125382
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 2;7,2x3,2;1;village(distance=0 size=50)
	Level spawn location: World: (-1423,4,-342), Chunk: (at 1,0,10 in -89,-22; contains blocks -1424,0,-352 to -1409,255,-337), Region: (-3,-1; contains chunks -96,-32 to -65,-1, blocks -1536,0,-512 to -1025,255,-1)
	Level time: 109822 game time, 39531 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 61176 (now: false), thunder time: 33234 (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 10.6.8
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 160321560 bytes (152 MB) / 988082176 bytes (942 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 14914 (835184 bytes; 0 MB) allocated, 14568 (815808 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: 2214 (123984 bytes; 0 MB) allocated, 1937 (108472 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['enderwiggin123'/1006, l='Kingdom', x=-2684.74, y=4.00, z=-450.61]]
	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-39211/2905112/