This is a great plugin.
I do have a problem, though, which I can't figure out. I already have preacher images in place, and they work fine. However, if I add a sermon and add a featured image to that sermon, the featured image shows up on the sermon page as both the main featured image (as it should) and as the thumbnail image for the preacher.
I'm guessing the problem lies somewhere in template-tags.php, but I can't pinpoint where it is. Any solutions?