Hopper: java.lang.NullPointerException ni.a(SourceFile:89)

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-1548/

Crash:

java.lang.NullPointerException
	at ni.a(SourceFile:89)
	at oe.aI(SourceFile:384)
	at oe.x(SourceFile:214)
	at nm.l_(SourceFile:278)
	at oe.l_(SourceFile:1149)
	at ue.l_(SourceFile:203)

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

---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 8/2/13 11:21 AM
Description: Ticking player

java.lang.NullPointerException
	at ni.a(SourceFile:89)
	at oe.aI(SourceFile:384)
	at oe.x(SourceFile:214)
	at nm.l_(SourceFile:278)
	at oe.l_(SourceFile:1149)
	at ue.l_(SourceFile:203)
	at ju.h(SourceFile:180)
	at jz.a(SourceFile:190)
	at et.a(SourceFile:136)
	at cm.b(SourceFile:64)
	at jz.e(SourceFile:60)
	at kc.b(SourceFile:37)
	at bkz.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:488)
	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 ni.a(SourceFile:89)
	at oe.aI(SourceFile:384)
	at oe.x(SourceFile:214)
	at nm.l_(SourceFile:278)
	at oe.l_(SourceFile:1149)
	at ue.l_(SourceFile:203)

-- Player being ticked --
Details:
	Entity Type: null (ju)
	Entity ID: 32
	Entity Name: legoman_111
	Entity's Exact location: -42.51, 73.00, -142.21
	Entity's Block location: World: (-43,73,-143), Chunk: (at 5,4,1 in -3,-9; contains blocks -48,0,-144 to -33,255,-129), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: 0.00, -0.08, 0.00
Stacktrace:
	at ju.h(SourceFile:180)
	at jz.a(SourceFile:190)
	at et.a(SourceFile:136)
	at cm.b(SourceFile:64)
	at jz.e(SourceFile:60)

-- Ticking connection --
Details:
	Connection: jz@36f7a0
Stacktrace:
	at kc.b(SourceFile:37)
	at bkz.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:488)
	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_10, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 106740640 bytes (101 MB) / 186281984 bytes (177 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 546 (30576 bytes; 0 MB) allocated, 500 (28000 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 190 (10640 bytes; 0 MB) allocated, 177 (9912 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['legoman_111'/32, l='§cWILD WEST §fby §3ICrafting', x=-42.51, y=73.00, z=-142.21]]
	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-1548/54581/