2011-02-23 05:42:22 [SEVERE] java.lang.IllegalStateException: TickNextTick list out of synch
2011-02-23 05:42:22 [SEVERE]    at net.minecraft.server.World.a(World.java:1512)
2011-02-23 05:42:22 [SEVERE]    at net.minecraft.server.World.g(World.java:1432)
2011-02-23 05:42:22 [SEVERE]    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:328)
2011-02-23 05:42:22 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:252)
2011-02-23 05:42:22 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-02-23 05:42:22 [SEVERE] Unexpected exception
java.lang.IllegalStateException: TickNextTick list out of synch
        at net.minecraft.server.World.a(World.java:1512)
        at net.minecraft.server.World.g(World.java:1432)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:328)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:252)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)