UV Mapping External Texture Changes to a Black Diffuse in Texture Paint mode Okay, so I've seen the other answers to this here in Blender Exchange. However, as far as I can figure out those textures were not saved when created in texture paint mode.
I added an external texture to my object:


...then I switched to texture paint mode and the texture changes to a complete black texture:


However if I switch back the texture while in texture paint mode it still keeps my object black:




Is this a lighting problem? Or am I not importing the external image correctly? I have tried packing/saving the image after importing it and putting it on my UV Map and then switching to texture paint mode, but it still occurs.
Try changing the painting mode to Image and selecting your image in 3D view > tool shelf > Slots while in texture paint mode: