title: ld: warning: ignoring file [path], missing required architecture i386 in file
body: <p>I get this error message when I try to run the iPhone Simulator. I use Xcode 4</p>
  
  <pre><code>    ld: warning: ignoring file /Users/Marius/Documents/AppSchool/Telefonbok/AddressBook.framework/AddressBook, missing required architecture i386 in file
  ld: warning: ignoring file /Users/Marius/Documents/AppSchool/Telefonbok/AddressBookUI.framework/AddressBookUI, missing required architecture i386 in file
  Undefined symbols for architecture i386:
    "_ABRecordCopyValue", referenced from:
        -[SecondViewController peoplePickerNavigationController:shouldContinueAfterSelectingPerson:] in SecondViewController.o
    "_ABMultiValueCopyValueAtIndex", referenced from:
        -[SecondViewController peoplePickerNavigationController:shouldContinueAfterSelectingPerson:] in SecondViewController.o
    "_OBJC_CLASS_$_ABPeoplePickerNavigationController", referenced from:
        objc-class-ref in SecondViewController.o
    "_kABPersonFirstNameProperty", referenced from:
        -[SecondViewController peoplePickerNavigationController:shouldContinueAfterSelectingPerson:] in SecondViewController.o
    "_kABPersonLastNameProperty", referenced from:
        -[SecondViewController peoplePickerNavigationController:shouldContinueAfterSelectingPerson:] in SecondViewController.o
    "_kABPersonPhoneProperty", referenced from:
        -[SecondViewController peoplePickerNavigationController:shouldContinueAfterSelectingPerson:] in SecondViewController.o
  ld: symbol(s) not found for architecture i386
  collect2: ld returned 1 exit status
  </code></pre>