No galleries available?

Hi! I’ve just started testing Media Library Folders (installed first) and MaxGalleria (installed last). According to the documentation I should be able to add images from MLF directly to MaxGalleria by selecting the “Add images to MaxGalleria gallery”. I’ve created two galleries in MaxGalleria, but they won’t show up in the pull-down menu when trying to use the aforementioned button.

I might be doing something wrong, but I can’t quite see what. 🙂 The only thing I see in the drop-down is “Select a gallery”.