Tab section round images not showing

I can’t get the three round images that show up in tab1, tab2 and tab3 to display (theme-options> Home page settings). I have uploaded images for all 3 tabs using the upload button, and I can also see the 3 images in the backend.

But on the site the page source code shows, for the 3 images:

<img alt=”1″ class=”img-circle” src=”” width=”” height=””>

<img alt=”2″ class=”img-circle” src=”” width=”” height=””>

<img alt=”3″ class=”img-circle” src=”” width=”” height=””>

Thank you!