Problem Server crash when running Monster 1.6.4

[Wifflebatcandycorn]

We are trying to run Monster 1.6.4 on our server. We are not using a local server, it's a free server provider and the OS we are using is FREEBSD...

We can login for a minute and then it crashes, in the crash report we are getting the following.

Description: Exception in server tick loop

java.lang.NullPointerException
at codechicken.lib.world.WorldExtensionManager.preTick(WorldExtensionManager.java:239)
at codechicken.lib.world.WorldExtensionManager.access$400(WorldExtensionManager.java:25)
at codechicken.lib.world.WorldExtensionManager$WorldExtensionServerTickHandler.tickStart(WorldExtensionManager.java:160)
at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:28)
at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:122)
at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:295)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:652)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)


Is this something we can fix?

 

[Wagon153]

Server specs?

 

[oppositeZERO]

Do you have the full server log?