Windows 7 x64, ATI Mobility Radeon HD 5470
Short description of error
3D paint mode will only paint to the first texture in the list of textures. I'm using Blender Internal renderer so that I can use GLSL for live bump map painting. If the color is in the first slot then 3D paint will only paint to that texture and going into edit mode to select the other texture as active will be ignored.
Exact steps for others to reproduce the error
Create a cube, unwrap, add a material and add two image textures to the material. Create two images for the textures.Go into edit mode and select the first image as active for painting. It should paint normally. Go back into edit mode and select the second image for painting. It will now paint to the first texture image instead..
tex1 - color
tex2 - bump
If I go into edit mode and select the color texture as active and go back to object paint it paints the color map.
If I go into edit mode and select the bump texture as active and go back to object paint it paint the color map.