I have a specific product and its image is not shown in the front-end. In the admin panel in Catalog->Manage Products->Images I can see all the images of its configurable product. So I don't understand why is this only happening only to this specific product. Any help would be appreciated.
EDIT: No exclude or remove is checked on the Images section. I tried to find the images on the server and they are there with ownership www-data:www-data