GetPoisonLevel Crash

[kamronbatman]

Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Server.Items.BaseInstrument.GetPoisonLevel(BaseCreature bc) in C:\Users\Tony\Desktop\ModernUO-master\Projects\UOContent\Items\Skill Items\Musical Instruments\BaseInstrument.cs:line 240
   at Server.Items.BaseInstrument.GetBaseDifficulty(Mobile targ) in C:\Users\Tony\Desktop\ModernUO-master\Projects\UOContent\Items\Skill Items\Musical Instruments\BaseInstrument.cs:line 270
   at Server.Items.BaseInstrument.GetDifficultyFor(Mobile targ) in C:\Users\Tony\Desktop\ModernUO-master\Projects\UOContent\Items\Skill Items\Musical Instruments\BaseInstrument.cs:line 285
   at Server.SkillHandlers.Peacemaking.InternalTarget.OnTarget(Mobile from, Object targeted) in C:\Users\Tony\Desktop\ModernUO-master\Projects\UOContent\Skills\Peacemaking.cs:line 159
   at Server.Targeting.Target.Invoke(Mobile from, Object targeted) in C:\Users\Tony\Desktop\ModernUO-master\Projects\Server\Targeting\Target.cs:line 204
   at Server.Network.PacketHandlers.TargetResponse(NetState state, PacketReader pvSrc) in C:\Users\Tony\Desktop\ModernUO-master\Projects\Server\Network\PacketHandlers.cs:line 1097
   at Server.Network.MessagePumpService.DoWork() in C:\Users\Tony\Desktop\ModernUO-master\Projects\Server\Network\MessagePumpService.cs:line 51
   at Server.Core.RunEventLoop(IMessagePumpService messagePumpService) in C:\Users\Tony\Desktop\ModernUO-master\Projects\Server\Main.cs:line 421