title: What is the possible cause of this crash?
body: <p>I realize that this is a bit of a vague question, but I'm looking for a place to start. I have testflight live running and am noticing the following crash:</p>
  
  <pre><code>0 Powercents 0x000781de testflight_backtrace + 142
  1 Powercents 0x00078d6c TFSignalHandler + 212
  2 libsystem_c.dylib 0x319937ec _sigtramp + 48
  3 libsystem_c.dylib 0x3198920e pthread_kill + 54
  4 libsystem_c.dylib 0x3198229e abort + 94
  5 AppSupport 0x35f70c2e abortAfterPassingIntegrityCheck + 38
  6 AppSupport 0x35f70ee6 runIntegrityCheckAndAbort + 526
  7 AppSupport 0x35f7102c checkResultWithStatement + 120
  8 AppSupport 0x35f72a12 _connectAndCheckVersion + 1058
  9 AppSupport 0x35f72ab6 CPSqliteDatabaseConnectionForWriting + 42
  10 AppSupport 0x35f72b8c CPSqliteDatabaseRegisterFunction + 20
  11 AddressBook 0x345523f6 ABCDBContextCreateWithPathAndAddressBook + 214
  12 AddressBook 0x34546428 ABCCreateAddressBookWithDatabaseDirectoryAndForceInProcessMigrationInProcessLinkingAndResetSortKeys + 232
  13 AddressBook 0x34554cd6 ABAddressBookCreate + 14
  14 TextInput 0x377981c4 _ZN2KB45fill_with_matchable_strings_from_address_bookERNS_7HashmapINS_6StringEbEE + 16
  15 TextInput 0x3779edf4 _ZN2KB21DynamicDictionaryImpl28background_load_address_bookERKNS_16StaticDictionaryE + 200
  16 TextInput 0x3779f72e _ZN2KBL14BackgroundLoadEPv + 278
  17 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  18 libsystem_c.dylib 0x3194a5ef thread_start + 7
  </code></pre>
  
  <p>It seems from what I can tell in testflight the crash happens right on opening the app. </p>
  
  <p>Here is the applicationDidFinishLaunching code:</p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {   
      NSDictionary *plistData = [[NSBundle mainBundle] infoDictionary];
      MB_LOG_LEVEL = [[plistData valueForKey:@"MBLogLevel"] intValue];
  
      NSArray *versionParts = [[plistData objectForKey:@"CFBundleVersion"] componentsSeparatedByString:@" "];
  
      self.versionString = [NSString stringWithFormat:NSLocalizedString(@"version.string", nil),
                            [plistData objectForKey:@"CFBundleShortVersionString"], 
                            // accounts for $Rev: 407 $
                            [versionParts objectAtIndex: ([versionParts count] &gt; 1 ? 1 : 0)],
                            [plistData objectForKey:@"MBBuildDate"]
                            ];
  
      [self bootstrap];
  
      // TestFlight and Google Analytics
      [Tracking startup];
  
      // Add the tab bar controller's current view as a subview of the window
      // Note: Do it this way, since the UIWindow class has no rootViewController
      // property in iOS 3.x.
      [window_ addSubview:self.tabBarController.view];
      [window_ makeKeyWindow];
  
      // set up APNS with Urban Airship
      [self initAirship:launchOptions];
  
      // If it is the first time running the app, delete all local notifications
      [self cleanLocalNotifications];
  
      // Handle launching from a notification
      UILocalNotification *localNotif =
      [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
      if (localNotif) {
          NSLog(@"Recieved Notification %@",localNotif);
      }    
  
      return YES;
  }
  </code></pre>
  
  <p>And here is the bootstrap method:</p>
  
  <pre><code>- (void)bootstrap
  {    
      // simple check for a bootstrapped db
      Settings *settings = (Settings*)[DataManager objectForEntity:NSStringFromClass([Settings class]) 
                                              sortDescriptorsOrNil:nil
                                                    predicateOrNil:nil];
      if (!settings) {
          settings = (Settings*)[DataManager createManagedInstance:NSStringFromClass([Settings class])];
          [settings setEnergyMobileFirstRun:[NSNumber numberWithBool:YES]];
          [settings setFirstRun:[NSNumber numberWithBool:YES]];
          [settings setShowWelcomeAlertView:[NSNumber numberWithBool:YES]];
          [settings setOnPeakAlertNotificationTime:[NSNumber numberWithInt:0]];
          [settings setMidPeakAlertNotificationTime:[NSNumber numberWithInt:0]];
          [settings setOffPeakAlertNotificationTime:[NSNumber numberWithInt:0]];
          [settings setOnPeakAlertNotificationsActive:[NSNumber numberWithBool:NO]];
          [settings setMidPeakAlertNotificationsActive:[NSNumber numberWithBool:NO]];
          [settings setOffPeakAlertNotificationsActive:[NSNumber numberWithBool:NO]];
          [DataManager saveManagedInstances];
      }
      if ([settings.firstRun boolValue])
      {
          // Clear the Database
          [DataManager deleteAllObjectsForEntity:@"Appliance"];
          [DataManager deleteAllObjectsForEntity:@"Answer"];
          [DataManager deleteAllObjectsForEntity:@"AnsweredQuestion"];
          [DataManager deleteAllObjectsForEntity:@"Question"];
          [self loadSavingsTipData];
          [self createChecklistTips];
          [self initializeTimeOfUseBehaviour];
          [settings setFirstRun:[NSNumber numberWithBool:NO]];
          [DataManager saveManagedInstances];
      }
  }
  </code></pre>
  
  <p>edited to add more info:</p>
  
  <p>This stacktrace is coming from TestFlight live. The crash is from an app that has been purchased from the app store.</p>
  
  <p>Here is the entire stacktrace:</p>
  
  <pre><code>    PRIMARY THREAD THREAD 10
  
  0 Powercents 0x000781de testflight_backtrace + 142
  1 Powercents 0x00078d6c TFSignalHandler + 212
  2 libsystem_c.dylib 0x319937ec _sigtramp + 48
  3 libsystem_c.dylib 0x3198920e pthread_kill + 54
  4 libsystem_c.dylib 0x3198229e abort + 94
  5 AppSupport 0x35f70c2e abortAfterPassingIntegrityCheck + 38
  6 AppSupport 0x35f70ee6 runIntegrityCheckAndAbort + 526
  7 AppSupport 0x35f7102c checkResultWithStatement + 120
  8 AppSupport 0x35f72a12 _connectAndCheckVersion + 1058
  9 AppSupport 0x35f72ab6 CPSqliteDatabaseConnectionForWriting + 42
  10 AppSupport 0x35f72b8c CPSqliteDatabaseRegisterFunction + 20
  11 AddressBook 0x345523f6 ABCDBContextCreateWithPathAndAddressBook + 214
  12 AddressBook 0x34546428 ABCCreateAddressBookWithDatabaseDirectoryAndForceInProcessMigrationInProcessLinkingAndResetSortKeys + 232
  13 AddressBook 0x34554cd6 ABAddressBookCreate + 14
  14 TextInput 0x377981c4 _ZN2KB45fill_with_matchable_strings_from_address_bookERNS_7HashmapINS_6StringEbEE + 16
  15 TextInput 0x3779edf4 _ZN2KB21DynamicDictionaryImpl28background_load_address_bookERKNS_16StaticDictionaryE + 200
  16 TextInput 0x3779f72e _ZN2KBL14BackgroundLoadEPv + 278
  17 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  18 libsystem_c.dylib 0x3194a5ef thread_start + 7
  Hide Other Threads
  
  THREAD 1 COM.APPLE.NSURLCONNECTIONLOADER
  
  0 CoreFoundation 0x3738f12a __CFRunLoopRun + 882
  1 CoreFoundation 0x373124a4 CFRunLoopRunSpecific + 300
  2 CoreFoundation 0x3731236c CFRunLoopRunInMode + 104
  3 Foundation 0x37b67bb8 +[NSURLConnection(Loader) _resourceLoadLoop:] + 308
  4 Foundation 0x37b67a80 -[NSThread main] + 72
  5 Foundation 0x37bfb590 __NSThread__main__ + 1048
  6 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  7 libsystem_c.dylib 0x3194a5ef thread_start + 7
  THREAD 2 COM.APPLE.CFSOCKET.PRIVATE
  
  0 libsystem_c.dylib 0x3194a5ef thread_start + 7
  THREAD 3 THREAD 11
  
  Empty Stacktrace
  
  THREAD 4 WEBTHREAD
  
  0 CoreFoundation 0x3738f12a __CFRunLoopRun + 882
  1 CoreFoundation 0x373124a4 CFRunLoopRunSpecific + 300
  2 CoreFoundation 0x3731236c CFRunLoopRunInMode + 104
  3 WebCore 0x32fd20f6 _ZL12RunWebThreadPv + 402
  4 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  5 libsystem_c.dylib 0x3194a5ef thread_start + 7
  THREAD 5 THREAD 8
  
  0 CoreFoundation 0x3738f12a __CFRunLoopRun + 882
  1 CoreFoundation 0x373124a4 CFRunLoopRunSpecific + 300
  2 CoreFoundation 0x3738f44a CFRunLoopRun + 98
  3 Powercents 0x000a9f0a +[UA_ASIHTTPRequest runRequests] + 134
  4 Foundation 0x37b67a80 -[NSThread main] + 72
  5 Foundation 0x37bfb590 __NSThread__main__ + 1048
  6 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  7 libsystem_c.dylib 0x3194a5ef thread_start + 7
  THREAD 6 THREAD 12
  
  Empty Stacktrace
  
  THREAD 7 THREAD 0
  
  0 CoreFoundation 0x3738f0f0 __CFRunLoopRun + 824
  1 CoreFoundation 0x373124a4 CFRunLoopRunSpecific + 300
  2 CoreFoundation 0x3731236c CFRunLoopRunInMode + 104
  3 GraphicsServices 0x3221f438 GSEventRunModal + 136
  4 UIKit 0x33a96e7c UIApplicationMain + 1080
  5 Powercents 0x0004cfb2 main + 66
  6 Powercents 0x0004cf6b start + 39
  THREAD 8 THREAD 1
  
  0 0xffffffff + 0
  THREAD 9 THREAD 2
  
  Empty Stacktrace
  
  THREAD 10 THREAD 3
  
  Empty Stacktrace
  
  THREAD 11 THREAD 6
  
  Empty Stacktrace
  
  THREAD 12 THREAD 7
  
  0 CoreFoundation 0x3738f12a __CFRunLoopRun + 882
  1 CoreFoundation 0x373124a4 CFRunLoopRunSpecific + 300
  2 CoreFoundation 0x3731236c CFRunLoopRunInMode + 104
  3 Foundation 0x37b5bb74 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 256
  4 Foundation 0x37b75522 -[NSRunLoop(NSRunLoop) run] + 78
  5 Powercents 0x0008d25c -[TFNetworkManager networkRunLoopThreadEntry] + 72
  6 Foundation 0x37b67a80 -[NSThread main] + 72
  7 Foundation 0x37bfb590 __NSThread__main__ + 1048
  8 libsystem_c.dylib 0x3194a734 _pthread_start + 320
  9 libsystem_c.dylib 0x3194a5ef thread_start + 7
  </code></pre>