pepe on "[Plugin: Media Credit] Media credit doesn't display if no caption present"

I've recently installed Media Credit, and it works well except for one thing: When I try to include a media credit with images that have no caption, the credit does not usually display. (Occasionally it does.)

https://wordpress.org/plugins/media-credit/

What version of WP? Which theme? Do you have a screenshot (or better yet, an example page)? What does the inserted shortcode (HTML view) look like exactly?

Thanks for the quick reply. The WP version is 4.5.3. The theme is a customization of the WPZoom "Tribune" theme.

The credit info does not save at all when I hit "update", and the little circle of doom adjacent to the credit box just keeps spinning. The inserted shortcode does not show up at all, in either the html or Visual views. Here's the html for the photo:
<img class="aligncenter wp-image-9802 size-full" src="http://www.theopennotebook.com/wp-content/uploads/2016/03/shutterstock_182727164.jpg" alt="shutterstock_182727164" width="1800" height="1523" />

This problem ONLY occurs when I try to insert a credit on images with no caption, and I've tried it in several different posts.

Thanks...

Do you see an error in the JS console?

Hmmm...I have no idea what that means. Can you clue me in?

Which browser do you use? In most, there is an entry in the context menu called "inspect" or "examine". This opens a debugging view where on of the tabs is called "Console" or something similar. If there is an error in the JavaScript code, it will show up there.