---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 5/27/13 11:16 AM
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 td.a(SourceFile:288)
	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: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)
	at td.a(SourceFile:288)

-- Entity being loaded --
Details:
	Entity Type: Zombie (td)
	Entity ID: 106
	Entity Name: Zombie
	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 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: (135,84,-167), Chunk: (at 7,5,9 in 8,-11; contains blocks 128,0,-176 to 143,255,-161), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-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['PLUTTTO'/17, l='MpServer', x=135.45, y=88.73, z=-163.43]]
	Chunk stats: MultiplayerChunkCache: 5
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (523,108,-153), Chunk: (at 11,6,7 in 32,-10; contains blocks 512,0,-160 to 527,255,-145), Region: (1,-1; contains chunks 32,-32 to 63,-1, blocks 512,0,-512 to 1023,255,-1)
	Level time: 1275539 game time, 72709 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: 10 total; [sh['entity.MinecartSpawner.name'/19, l='MpServer', x=131.50, y=75.69, z=-166.50], sh['entity.MinecartSpawner.name'/18, l='MpServer', x=131.50, y=75.69, z=-172.50], sh['entity.MinecartSpawner.name'/21, l='MpServer', x=143.50, y=75.69, z=-166.50], sh['entity.MinecartSpawner.name'/20, l='MpServer', x=137.50, y=75.69, z=-166.50], sh['entity.MinecartSpawner.name'/23, l='MpServer', x=137.50, y=75.69, z=-172.50], sh['entity.MinecartSpawner.name'/22, l='MpServer', x=143.50, y=75.69, z=-172.50], sh['entity.MinecartSpawner.name'/42, l='MpServer', x=149.50, y=75.69, z=-166.50], sh['entity.MinecartSpawner.name'/43, l='MpServer', x=149.50, y=75.69, z=-172.50], bbq['PLUTTTO'/17, l='MpServer', x=135.45, y=88.73, z=-163.43], no['entity.LeashKnot.name'/44, l='MpServer', x=155.50, y=73.50, z=-189.50]]
	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: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 46361704 bytes (44 MB) / 283557888 bytes (270 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 7955 (445480 bytes; 0 MB) allocated, 160 (8960 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.9.0
	OpenGL: GeForce GT 640/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: John Smith Legacy.zip
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1530 (85680 bytes; 0 MB) allocated, 1530 (85680 bytes; 0 MB) used