If you have not already checked up your Adobe Updater blinking in System Tray(Win) or Dock (Mac) for any Dreamweaver updates, do so right away. If you work with Business Catalyst sites, do it instantly!
Adobe Dreamweaver CS6 installed on your machine will receive this new update and address the performance issues reported by users of BC. When you click on the “Get Started” button in Business Catalyst panel within Dreamweaver, you might be seeing a progress bar for a very long time.
While the progress bar shows up, it may not let you work with the complete application. This has been fixed with the progress bar going away much much faster than earlier.