Can't get this to work. For $watermark I tried path and url. In Watermark Options I selected 'yes' and put the full correct server path to the png file, as in watermark.php. As soon as I selected 'Enable on-the-fly image protection' in Show Photos options none of the images could be viewed.
I need to protect some of the images that are copyrighted as they are appearing on other sites. I have selected the anti-leeching option, that helps, but a watermark will then identify who is pinching our pics.
What does "Do you want people to download their favorites?" do if 'no' is selected?