Minecraft crashed after generating world

[Markillo45]

i started a world it generated then right after it crashed said shutting down internal server 1 minute later i check crash reports and here it is.

 

 

---- Minecraft Crash Report ----

// Uh... Did I do that?

 

Time: 5/13/13 1:49 PM

Description: Exception ticking world

 

java.lang.ArrayIndexOutOfBoundsException: 4

at net.minecraft.entity.monster.EntityZombie.func_82163_bD(SourceFile:273)

at net.minecraft.world.SpawnerAnimals.func_77188_a(SpawnerAnimals.java:249)

at net.minecraft.world.SpawnerAnimals.func_77192_a(SpawnerAnimals.java:186)

at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:180)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:640)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)

at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

 

 

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

---------------------------------------------------------------------------------------

 

-- Head --

Stacktrace:

at net.minecraft.entity.monster.EntityZombie.func_82163_bD(SourceFile:273)

at net.minecraft.world.SpawnerAnimals.func_77188_a(SpawnerAnimals.java:249)

at net.minecraft.world.SpawnerAnimals.func_77192_a(SpawnerAnimals.java:186)

at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:180)

 

-- Affected level --

Details:

Level name: New World

All players: 1 total; [EntityPlayerMP['Markillo'/270, l='New World', x=-5.50, y=68.00, z=264.50]]

Chunk stats: ServerChunkCache: 625 Drop: 0

Level seed: 7162456592948887310

Level generator: ID 00 - default, ver 1. Features enabled: true

Level generator options:

Level spawn location: World: (-4,64,256), Chunk: (at 12,4,0 in -1,16; contains blocks -16,0,256 to -1,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

Level time: 1 game time, 1 day time

Level dimension: 0

Level storage version: 0x04ABD - Anvil

Level weather: Rain time: 138939 (now: false), thunder time: 124036 (now: false)

Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

Stacktrace:

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:640)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)

at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

 

-- System Details --

Details:

Minecraft Version: 1.5.1

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.7.0_21, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 44071712 bytes (42 MB) / 230604800 bytes (219 MB) up to 1037959168 bytes (989 MB)

JVM Flags: 1 total; -Xmx1024m

AABB Pool Size: 2758 (154448 bytes; 0 MB) allocated, 35 (1960 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63

FML: MCP v7.44 FML v5.1.43.682 Minecraft Forge 7.7.2.682 3 mods loaded, 3 mods active

mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

FML{5.1.43.682} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Forge{7.7.2.682} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Profiler Position: N/A (disabled)

Vec3 Pool Size: 442 (24752 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Player Count: 1 / 8; [EntityPlayerMP['Markillo'/270, l='New World', x=-5.50, y=68.00, z=264.50]]

Type: Integrated Server (map_client.txt)

Is Modded: Definitely; Client brand changed to 'fml,forge'

 

 

 

 

i just did a fresh install all that is installed is forge so if anyone can help i would appreciate it  

[LexManos]

Somehow your world's difficulty setting has been set to 4...

Did you have another mod installed when you created to world?

As that can't be done in vanilla/forge.

[Markillo45]

oh oops that was me  i set it to that on my other mod pack cause i thought it was peaceful and it is having problem rendering skeles thx