you are right . My folder 'album' as part of the album comes from previous uploads with FileZilla. I deleted all files within a smaller album on the server and uploaded it again using jAlbum's' uploader. The base directory contains some administrative files and all album folders with slides and thumbs. Perfect!
I have to check if some of my webloc pages in my large album in which I referenced fully qualified links which are located in the folder ...album still work.