Nope, that didn't work...
(I'm using Photoshop Elements, but I already managed to add an alpha layer to another texture to make parts of it transparent in-game...)
I hadn't tried an alpha layer because I was under the impression that you only needed an alpha layer if you wanted transparent areas. I already ported a texture without an alpha layer (the texture this bar I'm working with came from) into WoW and it works fine as a background... When you suggested it, I thought that maybe ecb wanted an alpha layer for it to work. But I guess that isn't the case...
Does anyone else have any ideas?