Server crash after item colored names (only weapon changes).

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hello guys!Just added item colored names on a local server (not fresh),following the instructions provided on pack.
The one issue is needed to change "x"Quality per ItemQuality.
Load fine,tested first just with armor,all ok,colored names are ok,then with clothing,and jewel,but with the last test with all,including weapons,when i try to login with my admin account server crash with the next log:

Server Crash Report
===================

ServUO Version 0.5, Build 6996.26785
Operating System: Microsoft Windows NT 6.2.9200.0
.NET Framework: 4.0.30319.42000
Time: 24/04/2019 21:04:18
Mobiles: 43659
Items: 180618
Exception:
System.InvalidCastException: La conversión especificada no es válida.
   en ItemNameHue.WeaponItemProps.CheckWeapon(BaseWeapon item)
   en ItemNameHue.WeaponItemProps.GetWeaponItemValue(Item item)
   en ItemNameHue.WeaponItemProps.RarityNameMod(Item item, String orig)
   en Server.Items.BaseWeapon.AddNameProperty(ObjectPropertyList list)
   en Server.Item.AddNameProperties(ObjectPropertyList list)
   en Server.Item.GetProperties(ObjectPropertyList list)
   en Server.Items.BaseWeapon.GetProperties(ObjectPropertyList list)
   en Server.Item.get_PropertyList()
   en Server.Item.InvalidateProperties()
   en Server.Item.set_Map(Map value)
   en Server.Mobile.set_Map(Map value)
   en Server.Mobile.set_NetState(NetState value)
   en Server.Network.PacketHandlers.PlayCharacter(NetState state, PacketReader pvSrc)
   en Server.Network.MessagePump.HandleReceive(NetState ns)
   en Server.Network.MessagePump.Slice()
   en Server.Core.Main(String[] args)

Any advice?Thank you,followed instructions 100% 4 times.

 

[PyrO]

WeaponItemProps.CheckWeapon(BaseWeapon item)

in there you are casting something that causes the crash, maybe someting like casting from a bow (BaseRanged) to BaseAxe