How to replace a weapon texture

[Stormrider]

Could someone please help me out with this. I'm trying to replace a weapon texture and when I import it with the editor it's added to the list, but the original texture keeps on being there, and it's not replaced, even when the imported texture has the same name. I've been able to replace sounds with this same method, but not textures, which appear missing when I test the weapon in the game. Any idea. Thanx.

[Wormbo]

Never modify default packages, you will only get into trouble. If you want to modify a weapon's skins you should subclass the weapon and replace the original weapon with the subclass.

[Stormrider]

It's a weapon which belongs to a pack I downloaded.

[Kyllian]

It's still better to subclass a weapon as opposed to just editing what you have

Either way, you'll need to add this line to the defaultproperties of the weapon:
Skins[0]=Texture'Packagename.Groupname.Texturename'
Depending on what the texture is, you may have to replace Texture with Shader, Combiner or FinalBlend