Images not showing

When I implement domain mapping, the domain works but some of the images stored in the Media Library don't show. The domain is, but we've had to switch back because of the lack of images. This is a live site so it can't be up without images. You can see what the site should look like at Neither of the two images show. Both are stored in the Media Library as and

When it is mapped to the broken images are: and

So one has been "renamed" and one has not. The "re-named" one is broken.