Crash after improper shutdown

[CaptainMoustache]

Last night windows update took it upon itself to restart the server I have running locally. Now I can restart the server and log in for about 30 seconds before it crashes, sometimes less


OS: Windows 7 64bit
Specs: 2.5Ghz Core2 duo
6GB RAM
Java: Java 7 Update 9 (64but)


No additional mods

Here is the crash report, it's the same every time

---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 11/16/12 9:09 PM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: 4
at ln.bB(EntityLiving.java:2595)
at pw.bB(SourceFile:199)
at pw.bD(SourceFile:222)
at xr.a(SpawnerAnimals.java:233)
at xr.a(SpawnerAnimals.java:170)
at ie.b(WorldServer.java:116)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:648)
at hg.r(DedicatedServer.java:241)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:585)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:492)
at fp.run(SourceFile:818)

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_09, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 539413512 bytes (514 MB) / 868745216 bytes (828 MB) up to 2863333376 bytes (2730 MB)
- JVM Flags: 2 total; -Xms512M -Xmx3G
- AABB Pool Size: 5845 (327320 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
- FML: ~ERROR~ NullPointerException: null
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 1361 (76216 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- Player Count: 1 / 10; [ih['CaptainMoustache'/275, l='world', x=803.78, y=63.00, z=257.31]]
- World world Entities: 0 total; []
- World world Players: 0 total; []
- World world Chunk Stats: ServerChunkCache: 0 Drop: 0
- Type: Dedicated Server



I've tried just moving the world folder to a fresh server install but it still crashes

Halp

 

[Oratory]

Have you tried making a new world?
Because if you can, it's clearly something in the world that is corrupt.

But i'm sure that someone else have a better idea on what could be wrong, or how it can be fixed.

 

[CaptainMoustache]

A quick update: I managed to recover the world

A generic fix but useful none the less

I removed the "world" folder and placed it in a separate directory with a freshly downloaded copy of the FTB server jar.


The fix still puzzles me as when I had the old server jar generate a new world there were no problems, only when using the original world folder and that jar did the crash occur.