I brought in an iWeb site to Dreamweaver CS5 using the mange sites panel successfully with all assets. The site is perfect in Live Mode but is not workable in Design Mode. I have also FTP it to Business Catalyst and can see it in their design mode better than in Dreamweaver. Any assistance that you can provide would be greatly appreciated.
iWeb and other so called WYSIWYG web authoring systems typically use poor code and bad layout practices which will cause experienced web developers and DW to puke.
The only thing I can suggest is to validate your code & fix reported errors or re-build the site with DW.
Best of luck,