server crash can you help please?

[AMB]

i dont by any means claim to understand any of this..
so if any one can tell me what this crash means it be very helpful..

Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Server.Items.BaseWeapon.GetProperties(ObjectPropertyList list)
   at Server.Item.get_PropertyList()
   at Server.Item.get_OPLPacket()
   at Server.Item.SendInfoTo(NetState state)
   at Server.Mobile.SendEverything()
   at Server.Mobile.MoveToWorld(Point3D newLocation, Map map)
   at Server.Mobiles.PlayerMobile.MoveToWorld(Point3D loc, Map map)
   at Server.Spells.Fourth.RecallSpell.Effect(Point3D loc, Map map, Boolean checkMulti)
   at Server.Spells.Fourth.RecallSpell.OnCast()
   at Server.Spells.CastTimer.OnTick()
   at Server.Timer.Slice()
   at Server.Core.Main(String[] args)

[Tannis]

I suck at this too but I'll give it a shot. Did you modify BaseWeapon, or the recall spell?

[Phantom]

Originally Posted by Tannis

I suck at this too but I'll give it a shot. Did you modify BaseWeapon, or the recall spell?

He modified this method

GetProperties

So he needs to fix it.