The Current version of Supper Suite is comprised of:
only those 3 products need to be installed, in that order.
Instead on double clicking the MXP file to begin the install, To install the extensions, open the extension manager, click the install icon and browse to the location where the MXP was saved to.
if you had the stand alone versions installed previously, make sure to Delete the Dreamweaver Cache file from the users configuration folder:
what extensions are installed, including version numbers?