Objective C: ARC errors (Automatic release problems)

Possible Duplicate:
Xcode 4 Final – “armv6 armv7” issue while linking with armv6 libs

Everything was working fine until I provisioned on my actual phone running iOS 4.3.3.
I have automatic referencing turned on so I don’t have to worry about releasing anything, but maybe I’m doing something wrong, the concept of not releasing is new to me. I get these great error:

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  • Undefined symbols for architecture armv7:
    "_objc_storeStrong", referenced from:
      -[AppDelegate .cxx_destruct] in AppDelegate.o
      -[DistanceViewController .cxx_destruct] in DistanceViewController.o
      -[SlopeViewController .cxx_destruct] in SlopeViewController.o
      -[MidpointViewController .cxx_destruct] in MidpointViewController.o
      -[AreaViewController .cxx_destruct] in AreaViewController.o
      -[PerimeterViewController .cxx_destruct] in PerimeterViewController.o
      -[VolumeViewController .cxx_destruct] in VolumeViewController.o
      ...
    "_objc_retain", referenced from:
      +[__ARCLite__ load] in libarclite_iphoneos.a(arclite.o)
      -[AppDelegate application:didFinishLaunchingWithOptions:] in AppDelegate.o
      -[AppDelegate applicationWillResignActive:] in AppDelegate.o
      -[AppDelegate applicationDidEnterBackground:] in AppDelegate.o
      -[AppDelegate applicationWillEnterForeground:] in AppDelegate.o
      -[AppDelegate applicationDidBecomeActive:] in AppDelegate.o
      -[AppDelegate applicationWillTerminate:] in AppDelegate.o
      ...
     (maybe you meant: _objc_retainedObject)
    "_objc_release", referenced from:
      _main in main.o
      -[AppDelegate application:didFinishLaunchingWithOptions:] in AppDelegate.o
      -[AppDelegate applicationWillResignActive:] in AppDelegate.o
      -[AppDelegate applicationDidEnterBackground:] in AppDelegate.o
      -[AppDelegate applicationWillEnterForeground:] in AppDelegate.o
      -[AppDelegate applicationDidBecomeActive:] in AppDelegate.o
      -[AppDelegate applicationWillTerminate:] in AppDelegate.o
      ...
    "_objc_retainAutoreleasedReturnValue", referenced from:
      _main in main.o
      -[AppDelegate application:didFinishLaunchingWithOptions:] in AppDelegate.o
      -[ViewController alertView:clickedButtonAtIndex:] in ViewController.o
      -[ViewController viewDidLoad] in ViewController.o
      -[DistanceViewController done:] in DistanceViewController.o
      -[DistanceViewController solve:] in DistanceViewController.o
      -[DistanceViewController viewDidLoad] in DistanceViewController.o
      ...
    ld: symbol(s) not found for architecture armv7
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    

    Solutions Collect From Internet About “Objective C: ARC errors (Automatic release problems)”

    Here is a link to another question about the same thing, it was solved here on Stackoverflow So i hope this information will help you.
    ARC Error