In the past I've used an older version of zenphoto, and the images were all neatly under the albums folder.
I'm now using 1.4 on a different server.
I've tried copying images to the albums folder, but they don't show up.
I've uploaded some images (very slow...), but i can't find them in the directories.
where are the images stored?
Thanks

Images are stored in the /albums folder in the root of your Zenphoto installation as always. If they don't show up and are there they are not published which is the default by upload via FTP.

If uploading via the backend does not work you might have wrong permissions. See your server error logs.