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  

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.

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