Custom made gif not showing up in Visual Composer front end.

I am using Visual Composer in my BuddyPress/Boss Theme website, and everything has worked fine until trying to insert a custom made gif image.
The image opens fine in a browser, and when I preview the page, Firebug shows that the image is there, and that it’s animating.

Why is it blank on the front end of Visual Composer?

I have the image set to “full” with it set to “center” in a single column. The size is 728 x 90.

Am I missing something here? I hope it’s easier than “can you deactivate all your plugins one by one, etc etc”.