Creamweaver and wordpress

I’m using the trial of dreamweaver cs5.5. I want to edit wordpress themes. I’ve set up the WAMP server, Pointed all the folders and url at the wordpress folder in the WAMP WWW folder. I’ve set it to use php/MySQL, set the server to testing and un-checked the “remote” box. In the url section I have "localhost:8888/wp/
Tried all that and all i get when I try to “discover” the files is the following message: “An unknown error occured while discovering dynamically -related files” I hit retry and nothing.
I thought it could be my firewall, so i shut tht down. No luck.
Any ideas?