you need to put it in another folder.. the case is that i never get it to work right..
i think the folder is:
your disc:\Dolphin\User\Load\Textures\S3XP78(wwe 13 system code)
1-Put Billy Gunn in a CPU vs CPU match.
2-During the match,click Graphics -> Hacks -> Texture Cache -> Change it to Fast.
3-Dump again and open with Photoshop.
4-Copy the modified texture and paste over the original one you just dumped.
If doesn't work try changing the Texture cache and see if it loads,because if you dumped a texture with "Safe" Cache,it won't load in "Fast" Cache.
I was pretty sur i didn't change it and stayed in fast since the beginning so i did what you say but with the Safe texture cache and it works (and my texture sucks ). I may have changed this option when trying to enhance the emulation and didn't remember it. I'm going to try to dump the textures when in fast and load my custom one again.