Find material using a missing material image?

I posted this over on the Autodesk forums but I thought I’d ask here as well…

I’m trying to render a 3D view within my project but when the progress box comes up, I get a warning that " The following render appearance images are missing" and is lists a missing. bmp

Is there a script to search all revit models and output the Image being used (even if it appears to be missing)?