Problems accessing FP site with DW

I am trying to access our site with dreamweaver FTP (have been using front page). I defined the remote site with no problem, but am unable to access the files. When I click on the retrieve files button, "retrieving remote folder information for html/" is displayed, then it appears as if the files are in the process of being retrieved. After waiting a while the following error message appears "Connection to remote host has been lost. Click the connect button to reconnect". I then tried to access the site with front page to see if the host was down and accessed the site with no problems.