I took me a while to figure out how it works but that was my fault, not XCloner's. Ovidiu (at XCloner Free Support Forum) provided outstanding service by explaining each step patiently and guided me. Since I had a hosted Joomla installation I was trying to clone to an alrady existing Joomla site. Ovidiu explained that XCloner doesn;t require Joomla to be installed and I should create a new blank database. It worked like a charm. I just had to copy the configuraion.php file separately and changed its permission. All in all I am very happy to recommend this extention to anyone.