Gallery Images not saving/working

HEllo,
thanks for a great plugin.

I wanted to bulk update / add images to products. So, i was happy with the Gallery option.

Only, it’s not working for me. When i select images to be added, it doesn’t give me the option to Save changes,
because the system says there aren’t any.

When i add product image gallery via single product edit page and i then return to the Bulk Editor,
i do see the gallery images, double click the icon and i can add images.. only, it doesn’t save or add them.

Please let me know what i can do about this.

Thanks.

Radomir