cityguide,
Sorry to hear you’re having trouble here, but hopefully I can help. This seems to be a permissions issue with using your site in preview DNS mode, since I’m seeing this JavaScript error. This is happening because the site URL in your WordPress settings doesn’t match the URL that the user is viewing. I would suggest temporarily changing your site URL to match the *.previewdns.com URL, until you take the site live.
Give that a try and let me know if it does the trick. Thanks! ๐
-Casey-