---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 29/05/13 20:52
Description: Loading entity NBT

java.lang.NullPointerException
	at np.a(SourceFile:357)
	at nq.a(SourceFile:251)
	at mx.f(SourceFile:1061)
	at aas.a(SourceFile:116)
	at aas.h(SourceFile:234)
	at bhe.a(SourceFile:22)
	at bhe.a(SourceFile:17)
	at bhe.a(SourceFile:12)
	at bhj.a(SourceFile:106)
	at bhj.a(SourceFile:98)
	at bdt.a(SourceFile:317)
	at bdm.a(SourceFile:836)
	at bdm.b(SourceFile:684)
	at asx.R(SourceFile:674)
	at asx.d(SourceFile:607)
	at net.minecraft.client.main.Main.main(SourceFile:78)


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

-- Head --
Stacktrace:
	at np.a(SourceFile:357)
	at nq.a(SourceFile:251)

-- Entity being loaded --
Details:
	Entity Type: Spider (tb)
	Entity ID: 21499
	Entity Name: Spider
	Entity's Exact location: 0,00, 0,00, 0,00
	Entity's Block location: World: (0,0,0), Chunk: (at 0,0,0 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)
	Entity's Momentum: 0,00, 0,00, 0,00
Stacktrace:
	at mx.f(SourceFile:1061)
	at aas.a(SourceFile:116)
	at aas.h(SourceFile:234)
	at bhe.a(SourceFile:22)
	at bhe.a(SourceFile:17)
	at bhe.a(SourceFile:12)

-- Tile Entity Details --
Details:
	Name: MobSpawner // arm
	Block type: ID #52 (tile.mobSpawner // aol)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (-13,134,-24), Chunk: (at 3,8,8 in -1,-2; contains blocks -16,0,-32 to -1,255,-17), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Actual block type: ID #52 (tile.mobSpawner // aol)
	Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
	at bhj.a(SourceFile:106)
	at bhj.a(SourceFile:98)
	at bdt.a(SourceFile:317)
	at bdm.a(SourceFile:836)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bbq['Pihrra'/11, l='MpServer', x=-57,68, y=107,62, z=12,61]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (27,135,703), Chunk: (at 11,8,15 in 1,43; contains blocks 16,0,688 to 31,255,703), Region: (0,1; contains chunks 0,32 to 31,63, blocks 0,0,512 to 511,255,1023)
	Level time: 1908272 game time, 704106 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 19 total; [sj['entity.MinecartTNT.name'/10716, l='MpServer', x=-11,53, y=62,50, z=51,50], sj['entity.MinecartTNT.name'/10717, l='MpServer', x=-10,22, y=62,50, z=54,50], sg['entity.MinecartRideable.name'/10712, l='MpServer', x=-112,50, y=87,50, z=55,50], sg['entity.MinecartRideable.name'/10713, l='MpServer', x=-11,41, y=62,50, z=54,50], sg['entity.MinecartRideable.name'/10714, l='MpServer', x=-8,50, y=62,50, z=54,50], sg['entity.MinecartRideable.name'/10715, l='MpServer', x=-12,50, y=62,50, z=52,41], bbq['Pihrra'/11, l='MpServer', x=-57,68, y=107,62, z=12,61], sg['entity.MinecartRideable.name'/10710, l='MpServer', x=-107,50, y=87,50, z=60,50], sg['entity.MinecartRideable.name'/10711, l='MpServer', x=-109,50, y=87,50, z=60,50], sg['entity.MinecartRideable.name'/10705, l='MpServer', x=5,50, y=63,50, z=11,81], qw['Bat'/18957, l='MpServer', x=8,45, y=60,93, z=38,80], qw['Bat'/20976, l='MpServer', x=16,03, y=62,28, z=16,43], qw['Bat'/20979, l='MpServer', x=8,79, y=61,29, z=6,64], qw['Bat'/21460, l='MpServer', x=1,46, y=54,81, z=82,46], qw['Bat'/20978, l='MpServer', x=10,77, y=65,12, z=10,86], qw['Bat'/20975, l='MpServer', x=3,61, y=63,57, z=2,42], qw['Bat'/21489, l='MpServer', x=-54,22, y=49,05, z=92,78], qw['Bat'/17579, l='MpServer', x=14,24, y=68,40, z=-11,24], qw['Bat'/11390, l='MpServer', x=9,33, y=62,93, z=22,88]]
	Retry entities: 0 total; []
Stacktrace:
	at bbn.a(SourceFile:282)
	at asx.b(SourceFile:1793)
	at asx.d(SourceFile:616)
	at net.minecraft.client.main.Main.main(SourceFile:78)

-- System Details --
Details:
	Minecraft Version: 13w21b
	Operating System: Mac OS X (x86_64) version 10.8.3
	Java Version: 1.6.0_45, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 86984784 bytes (82 MB) / 604192768 bytes (576 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 645 (36120 bytes; 0 MB) allocated, 216 (12096 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	LWJGL: 2.9.0
	OpenGL: Intel HD Graphics 4000 OpenGL Engine GL version 2.1 INTEL-8.10.44, Intel Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1572 (88032 bytes; 0 MB) allocated, 57 (3192 bytes; 0 MB) used