I've been searching through all these tutorials and help threads and tried everything, but nothing works!



I'm trying to make a shadow catcher using the Use Background shader, with an image plane behind it. As you can see, I have Receive Shadows and Primary Visibility on, yet the plane keeps appearing in my renders.

I have Final Gathering and Indirect Light set-up for a Mental Ray render, with three Directional Lights casting Ray Trace shadows.

Any help is appreciated, this is so frustrating.