i also have this kind of problem, only i work with MAMP, MySQL administrator and MySQL Query browser; when i want to select a MySQL database i get the following error:"The URL prefix....for this site's server could not be resolved" The MAMP application is in the applications folder and the database Elearning site in the htdocs-folder. Connection to this folder with Dreamweaver is no problem an the MAMP server is running.
Peter