Custom Large Image, Square Image not displaying

New WP 2.9.2 site with the BP plugin and Scholar theme. I chose "Yes" for the Custom Large Image and Custom Square Image, and used the following URL as the reference for both:

http://thefaith.org/images/160x160line.png, which I can put into my browser and the image displays.

We're not seeing the images however, and are at a loss as to why not. Any advice would be appreciated.

Thanks