title: missing required architecture armv7 in file?
body: <p>I keep getting this warning and errors can anyone help?</p>
  
  <pre><code>    ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Platforms       /iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk/System/Library/Frameworks//SystemConfiguration.framework/SystemConfiguration, missing required architecture armv7 in file
      Undefined symbols for architecture armv7:
      "_SCNetworkReachabilityCreateWithAddress", referenced from:
    +[Reachability reachabilityWithAddress:] in Reachability.o
     "_SCNetworkReachabilityCreateWithName", referenced from:
    +[Reachability reachabilityWithHostName:] in Reachability.o
     "_SCNetworkReachabilityUnscheduleFromRunLoop", referenced from:
    -[Reachability stopNotifier] in Reachability.o
     "_SCNetworkReachabilityScheduleWithRunLoop", referenced from:
    -[Reachability startNotifier] in Reachability.o
     "_SCNetworkReachabilitySetCallback", referenced from:
    -[Reachability startNotifier] in Reachability.o
     "_SCNetworkReachabilityGetFlags", referenced from:
    -[Reachability connectionRequired] in Reachability.o
    -[Reachability currentReachabilityStatus] in Reachability.o
     ld: symbol(s) not found for architecture armv7
     clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>My app workings fine in the Simulator I don't get this it is just when I build to the phone.</p>