---- Minecraft Crash Report ----
// You're mean.

Time: 5/30/13 9:14 PM
Description: Loading entity NBT

java.lang.UnsupportedOperationException: Cannot modify readonly attribute
	at oi.a(SourceFile:54)
	at sx.a(SourceFile:87)
	at sx.a(SourceFile:70)
	at np.a(SourceFile:348)
	at nq.a(SourceFile:251)
	at mx.f(SourceFile:1061)
	at aas.a(SourceFile:116)
	at aas.h(SourceFile:234)
	at bhk.a(SourceFile:22)
	at bhk.a(SourceFile:17)
	at bhk.a(SourceFile:12)
	at bhp.a(SourceFile:106)
	at bhp.a(SourceFile:98)
	at bdz.a(SourceFile:317)
	at bds.a(SourceFile:836)
	at bds.b(SourceFile:682)
	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 oi.a(SourceFile:54)
	at sx.a(SourceFile:87)
	at sx.a(SourceFile:70)
	at np.a(SourceFile:348)
	at nq.a(SourceFile:251)

-- Entity being loaded --
Details:
	Entity Type: Spider (tb)
	Entity ID: 77
	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, -0.08, 0.00
Stacktrace:
	at mx.f(SourceFile:1061)
	at aas.a(SourceFile:116)
	at aas.h(SourceFile:234)
	at bhk.a(SourceFile:22)
	at bhk.a(SourceFile:17)
	at bhk.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: (1721,55,112), Chunk: (at 9,3,0 in 107,7; contains blocks 1712,0,112 to 1727,255,127), Region: (3,0; contains chunks 96,0 to 127,31, blocks 1536,0,0 to 2047,255,511)
	Actual block type: ID #52 (tile.mobSpawner // aol)
	Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
	at bhp.a(SourceFile:106)
	at bhp.a(SourceFile:98)
	at bdz.a(SourceFile:317)
	at bds.a(SourceFile:836)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bbw['luckygamer101'/8, l='MpServer', x=1721.14, y=56.62, z=108.89]]
	Chunk stats: MultiplayerChunkCache: 120
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (1735,4,70), Chunk: (at 7,0,6 in 108,4; contains blocks 1728,0,64 to 1743,255,79), Region: (3,0; contains chunks 96,0 to 127,31, blocks 1536,0,0 to 2047,255,511)
	Level time: 36414 game time, 284 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: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 9 total; [nn['entity.ItemFrame.name'/0, l='MpServer', x=1724.94, y=57.50, z=90.50], nn['entity.ItemFrame.name'/1, l='MpServer', x=1724.94, y=57.50, z=92.50], nn['entity.ItemFrame.name'/2, l='MpServer', x=1724.94, y=57.50, z=94.50], nn['entity.ItemFrame.name'/3, l='MpServer', x=1724.94, y=57.50, z=96.50], nn['entity.ItemFrame.name'/4, l='MpServer', x=1719.50, y=57.50, z=97.94], rg['Pig'/5, l='MpServer', x=1759.78, y=55.00, z=83.69], rh['Sheep'/6, l='MpServer', x=1745.16, y=55.00, z=83.94], qz['Cow'/7, l='MpServer', x=1759.72, y=55.00, z=110.34], bbw['luckygamer101'/8, l='MpServer', x=1721.14, y=56.62, z=108.89]]
	Retry entities: 0 total; []
Stacktrace:
	at bbt.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: 13w22a
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_13, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 243093048 bytes (231 MB) / 495386624 bytes (472 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 9254 (518224 bytes; 0 MB) allocated, 745 (41720 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics 3000 GL version 3.1.0 - Build 9.17.10.2828, Intel
	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: 294 (16464 bytes; 0 MB) allocated, 137 (7672 bytes; 0 MB) used