Помогите Краш сервера 1.4.7

Приветствую, такая проблема сервер крашиться вот с такой ошибкой

Код:

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.
 
Time: 2/24/13 1:46 PM
Description: Exception ticking world
 
java.lang.NullPointerException
    at in.a(WorldServer.java:1284)
    at in.V(WorldServer.java:1264)
    at in.b(WorldServer.java:306)
    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:945)
    at ho.r(DedicatedServer.java:309)
    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:857)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:744)
    at fy.run(ThreadMinecraftServer.java:16)
 
 
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
 
-- Head --
Stacktrace:
    at in.a(WorldServer.java:1284)
    at in.V(WorldServer.java:1264)
    at in.b(WorldServer.java:306)