That new plugin from your last message has fixed the problem. Thank you for working on this with us.
I notice the version number is quite different. How should we handle future updates to the plugin? Will this bugfix be incorporated into the next regular version of the free plugin?
I did exactly as you said (cleared browser cache, there is no website caching plugin) and tried it with an image that was already in the media library as well as one that I just uploaded, and either way I still get the “no image” result.
I can also confirm that we have just updated to version 3.61.1 and the image is not saving correctly. We attempt to create an image type popup and add an image from the media library but after publishing or previewing, we see the default “no image” picture.