Can’t change title of media in Media Library

With FooGallery installed & active, I am unable to change the titles of items in the Media Library. I’ve just done a clean WP install on my PC & installed FooGallery. I’ve uploaded one pdf file to the media library. When I try to edit the title & click update, it reverts to the original title. If I deactivate FooGallery then I can change the title as intended. This is very frustrating as I may have have to stop using FooGallery because of this.