Xcode, Phonegap failed to load webpage with error: The requested URL was not found on this server solution.  Phonegap tutorial error and solution.  No one else has this solution, not even Stackoverflow can help!

Are you completing the phonegap installation tutorial from this guy:

http://iphonedevlog.wordpress.com/2012/09/24/phonegap-2-1-0-in-mac-os-x-mountain-lion-10-8-from-download-to-ios-app-store/

Me too, until I got stuck with his error message […]