Texture disappears when "Render Image" is clicked The main screen before clicking "render image":



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I am very, very new to Blender, so bare with me.

I had a friend make a model for me.  He assigned two textures to two objects called "Cube" and "white."  Each works properly when the render view is closed, but when I generate a render, no matter what pose, all textures disappear, and the model is solid black without shading.  How do I fix this?
Thanks to Scott Milner, the issue has been solved.

A light source needed added.