I opened up the .pbo file and then took a texture from it. I changed it around a bit and then packed it up as a .PAA. There was another pic which was almost identical but was a .PAC. I changed this in the same way as the .PAA and packed it up again.
Then I put the new files back and saved the whole thing back into .pbo format.
I put the .pbo into the addons folder and went ingame to see what happened. Nothing!
The area which I had changed was exactly the same as it was before. It hould have been much different.
Why hasn't my modified area shown up ingame? I know it's in the .pbo because I checked afterwards. Will the addon not let me simply swap the textures over?
I used Photshop to do the editing.
Cheers.