Sorry I can’t give you one of my objects as a reference, (I cannot upload on this current network, but once I am relocated, my own connection will be available).
I have a character, that uses:
1 UV Normal Map COLOUR OFF, (add). Slot 1 ; normal 0.8
1 UV Normal Map COLOUR OFF, (add). Slot 2 ; normal 0.2
1 Texture map COLOUR for skin and clothing , (mix)
Each image map at some time, has been loaded into the UV editor, then the texture map, (colour), has been reloaded last, to make the colour map predominants.
All UV textures are also set to UV and flat.
ALL my UV textures and Normal Maps, show up correctly in the Blender 3D view, and when the Game Engine is active.
I’m using GLSL not Multi-texture though.
“Add” also depends on the texture order, in the stack.
If someone else could give you an example object, (hint, hint), great!
I’ll try to get an example object to you, but it may take a while, as I am in the middle of relocating and will have to commandeer my cuz’s machine.
Regards again.
Cig.