Crashing of Phonegap 1.9.0 application due to _NSURLIsExcludedFromBackupKey error

I am trying to load the HelloWorld Example in Phonegap 1.9.0 using iOS and i am having some problems doing that... I am following this: http://docs.phonegap.com/en/1.9.0/guide_getting-started_ios_index.md.html#Getting%20Started%20with%20iOS It says Apple Mach-O Linker(Id) Error.

When I click the error, it says:

Undefined symbols for architecture i386:
  "_NSURLIsExcludedFromBackupKey", referenced from:
      -[CDVFile setMetadata:withDict:] in Cordova
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I wrote a similar app that doesn't use phone gap and it runs properly... But when i used phone gap, it is giving me this error.. Not sure what to do...Need some guidance.