Difficulties enabling/disabling shader at runtime

I have a shader that I've created that I am using to draw an outline around the Sprite assigned to my Sprite Renderer component on a prefab. I want to enable / disable the shader to draw an outline around the character when they are selected but when I disable the shader the image stops displaying and when I change the shader to the standard Diffuse shader the image stops displaying. And finally, I have several of the same prefabs in the scene and whenever I remove the shader on even one prefaball my prefabs stop displaying at once.

here is a screenshot of my prefab configuration.



Appreciate the help finding out what I'm doing wrong.

 

Dang it. Wouldn't you know, every time I think I'm submitting a question I'm sure I can't figure out on my own I solve it right away. Sorry, nothing to see here

Just needed to swap the material, not the shader.

 

Thank you from the future!!