Error: start page at 'www/index.html 'was not found

Using xcode 4.3.2to create a new phonegapapplication, The index.html file is stored in the wwwdirectory, but the error: Error: start page at 'www/index.html 'was not found is reported during running, which is caused by incompatibility between phonegap and xcode 4.

 

Right-click the project name-> add files to "project name", select the WWW directory, and make sure that copy items into destination group's folder (if needed) is selected) and create folder references for any added folders.