Решено CustomNPC краш

При создании NPC из мода CustomNPC на сервере крашит Minecraft!
Моды: http://SSMaker.ru/4c338ba0/
Краш:

Код:

    at noppes.npcs.gui.mainmenu.GuiNpcDisplay.<init>(GuiNpcDisplay.java:25)
    at noppes.npcs.ClientProxy.getGui(ClientProxy.java:204)
    at noppes.npcs.ClientProxy.openGui(ClientProxy.java:308)
    at noppes.npcs.PacketHandlerClient.client(PacketHandlerClient.java:120)
    at noppes.npcs.PacketHandlerClient.onPacketData(PacketHandlerClient.java:40)
    at cpw.mods.fml.common.network.NetworkRegistry.handlePacket(NetworkRegistry.java:255)
    at cpw.mods.fml.common.network.NetworkRegistry.handleCustomPacket(NetworkRegistry.java:245)
    at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:84)
    at net.minecraft.client.multiplayer.NetClientHandler.func_72501_a(NetClientHandler.java:1571)
    at net.minecraft.network.packet.Packet250CustomPayload.func_73279_a(SourceFile:59)
    at com.mumfrey.liteloader.core.HookPluginChannels.func_73279_a(HookPluginChannels.java:99)
    at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:461)
    at net.minecraft.client.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:266)

 

Проблему решил, нужно было в регионе включить спавн мобов.