[Help:] Server fall down and go boom

    Ran IC2 server since release. Today it gave this on startup:


    2011-10-11 21:52:13 [INFO] ModLoader Server Beta 1.8.1 Initializing...
    2011-10-11 21:52:13 [INFO] ModLoaderMP Beta 1.8.1 Initialized
    2011-10-11 21:52:13 [INFO] Mod Loaded: mod_IC2 v1.15
    2011-10-11 21:52:13 [INFO] Starting minecraft server version Beta 1.8.1
    2011-10-11 21:52:13 [INFO] Loading properties
    2011-10-11 21:52:13 [INFO] Starting Minecraft server on 69.90.189.65:25565
    2011-10-11 21:52:13 [INFO] Preparing level "woolrd"
    2011-10-11 21:52:13 [INFO] Default game type: 0
    2011-10-11 21:52:13 [SEVERE] Unexpected exception
    java.lang.NullPointerException
    at en.c(WorldServer.java:88)
    at eh.a(World.java:2287)
    at jf.d(Chunk.java:637)
    at ja.c(ChunkProviderServer.java:72)
    at ja.b(ChunkProviderServer.java:86)
    at eh.c(World.java:248)
    at eh.a(World.java:180)
    at eh.f(World.java:186)
    at eh.a(World.java:136)
    at st.a(SourceFile:50)
    at eh.c(World.java:122)
    at eh.<init>(World.java:89)
    at en.<init>(WorldServer.java:24)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:156)
    at net.minecraft.server.MinecraftServer.c(MinecraftServer.java:134)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:262)
    at ce.run(SourceFile:417)


    Minimal damage to world/players/inventories/chest contents would be appreciated.

    1. Re-install All mods (use new jar)
    2. If that dont work Start new world if that still dont work post again if it works your world is the problem.
    solution (if the 2. Thing from 2 happens): Grab all Buildings from the world with MC Edit Paste them into the new world and get all player datas from the old world and paste them into the new one.

    :\ I know the obvious "reset everything" works. Already tried it. I know its a world error. What I was looking for was a way to repair or delete a particular file... Not just throw away the world and crudely graft over a couple chunks. What if this keeps happening? My servermates will stop paying for the rent on the server and it will all go down.




    EDIT: Opening and saving in MCEdit repaired what was broken. Server launched without a hitch after that.