Warning "surfaces have no file texture assigned"

[napoleon-1]

I am workinh my way through Maya foundation with Maya 5 PLE. I'm working on Jack in the box. I have gotten to the stage where I have finished with head complete with the eyes and all and I have to add colour texture to the face. Trouble is when I select Texture->3D paint Tool, i get the warning "Some surfaces have no file texture assigned to the current attribute."

What does it mean and how do I correct it please.

Regards
Napoleon.

[angu]

Have you checked to be sure your project is set right? Other than that maybe try to apply a blank lambert material to it first.