title: app works on simulator but not on iPhone
body: <p>I have developed and iPhone app and it seems to work fine on the simulator 5.0. However, when I tried to test it on the real device, an iphone w/ ios 5, it's not working.
  The app launched but all I see was a black screen.</p>
  
  <p>Here's the crash log I found in the Device Log
  Sorry I am pretty new to this.. I am not sure if these are symbolicated. (seems like they are?)</p>
  
  <blockquote>
  <pre><code>Incident Identifier: B2601015-4CBF-478D-B9C3-2D2B4BEED892
  CrashReporter Key:   9c71d7c2ed64b2862a0a6d90e3d4ce839868a03c
  Hardware Model:      iPhone4,1
  Process:         memoryChallenger [21037]
  Path:            /var/mobile/Applications/C0981716-8CDF-4816-8E94- 261CD8F164FD/memoryChallenger.app/memoryChallenger
  Identifier:      memoryChallenger
  Version:         ??? (???)
  Code Type:       ARM (Native)
  Parent Process:  launchd [1]
  
  Date/Time:       2012-01-30 21:54:18.753 -0800
  OS Version:      iPhone OS 5.0.1 (9A405)
  Report Version:  104
  
  Exception Type:  EXC_CRASH (SIGABRT)
  Exception Codes: 0x00000000, 0x00000000
  Crashed Thread:  0
  
  Last Exception Backtrace:
  0   CoreFoundation                    0x37ecb8bf __exceptionPreprocess + 163
  1   libobjc.A.dylib                   0x319b11e5 objc_exception_throw + 33
  2   CoreFoundation                    0x37ecb7b9 +[NSException raise:format:] + 1
  3   CoreFoundation                    0x37ecb7db +[NSException raise:format:] + 35
  4   UIKit                             0x354f7747 -[UINib instantiateWithOwner:options:] + 1567
  5   UIKit                             0x354f8bb9 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 137
  6   UIKit                             0x35431a45 -[UIApplication _loadMainNibFileNamed:bundle:] + 37
  7   UIKit                             0x352bb227 -[UIApplication _loadMainInterfaceFile] + 223
  8   UIKit                             0x352b5313 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 227
  9   UIKit                             0x35283921 -[UIApplication handleEvent:withNewEvent:] + 1017
  10  UIKit                             0x352833bf -[UIApplication sendEvent:] + 55
  11  UIKit                             0x35282d2d _UIApplicationHandleEvent + 5809
  12  GraphicsServices                  0x379a0df3 PurpleEventCallback + 883
  13  CoreFoundation                    0x37e9f553 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 39
  14  CoreFoundation                    0x37e9f4f5 __CFRunLoopDoSource1 + 141
  15  CoreFoundation                    0x37e9e343 __CFRunLoopRun + 1371
  16  CoreFoundation                    0x37e214dd CFRunLoopRunSpecific + 301
  17  CoreFoundation                    0x37e213a5 CFRunLoopRunInMode + 105
  18  UIKit                             0x352b4457 -[UIApplication _run] + 551
  19  UIKit                             0x352b1743 UIApplicationMain + 1091
  20  memoryChallenger                  0x000050d9 main (main.m:14)
  21  memoryChallenger                  0x000027ec start + 40
  
  
  Thread 0 name:  Dispatch queue: com.apple.main-thread
  Thread 0 Crashed:
  0   libsystem_kernel.dylib            0x3376532c __pthread_kill + 8
  1   libsystem_c.dylib                 0x36331f54 pthread_kill + 48
  2   libsystem_c.dylib                 0x3632afe4 abort + 88
  3   libc++abi.dylib                   0x37e10f64 abort_message + 40
  4   libc++abi.dylib                   0x37e0e346 _ZL17default_terminatev + 18
  5   libobjc.A.dylib                   0x319b12dc _objc_terminate + 140
  6   libc++abi.dylib                   0x37e0e3be _ZL19safe_handler_callerPFvvE + 70
  7   libc++abi.dylib                   0x37e0e44a std::terminate() + 14
  8   libc++abi.dylib                   0x37e0f81e __cxa_rethrow + 82
  9   libobjc.A.dylib                   0x319b122e objc_exception_rethrow + 6
  10  CoreFoundation                    0x37e2153e CFRunLoopRunSpecific + 398
  11  CoreFoundation                    0x37e2139e CFRunLoopRunInMode + 98
  12  UIKit                             0x352b4450 -[UIApplication _run] + 544
  13  UIKit                             0x352b173c UIApplicationMain + 1084
  14  memoryChallenger                  0x000050d2 main (main.m:14)
  15  memoryChallenger                  0x000027e4 start + 32
  
  Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
  Thread 1:
  0   libsystem_kernel.dylib            0x337553b4 kevent + 24
  1   libdispatch.dylib                 0x37b89f74 _dispatch_mgr_invoke + 708
  2   libdispatch.dylib                 0x37b89c92 _dispatch_mgr_thread + 30
  
  Thread 2:
  0   libsystem_kernel.dylib            0x33765cd4 __workq_kernreturn + 8
  1   libsystem_c.dylib                 0x362ee30a _pthread_wqthread + 610
  2   libsystem_c.dylib                 0x362ee09c start_wqthread + 0
  
  Thread 3:
  0   libsystem_kernel.dylib            0x33765cd4 __workq_kernreturn + 8
  1   libsystem_c.dylib                 0x362ee30a _pthread_wqthread + 610
  2   libsystem_c.dylib                 0x362ee09c start_wqthread + 0
  
  Thread 4 name:  WebThread
  Thread 4:
  0   libsystem_kernel.dylib            0x33755010 mach_msg_trap + 20
  1   libsystem_kernel.dylib            0x33755206 mach_msg + 50
  2   CoreFoundation                    0x37e9f41c __CFRunLoopServiceMachPort + 120
  3   CoreFoundation                    0x37e9e154 __CFRunLoopRun + 876
  4   CoreFoundation                    0x37e214d6 CFRunLoopRunSpecific + 294
  5   CoreFoundation                    0x37e2139e CFRunLoopRunInMode + 98
  6   WebCore                           0x326f2128 _ZL12RunWebThreadPv + 396
  7   libsystem_c.dylib                 0x362f3c16 _pthread_start + 314
  8   libsystem_c.dylib                 0x362f3ad0 thread_start + 0
  
  Thread 0 crashed with ARM Thread State:
      r0: 0x00000000    r1: 0x00000000      r2: 0x00000001      r3: 0x00000000
      r4: 0x00000006    r5: 0x3f31dce8      r6: 0x00000002      r7: 0x2fdff864
      r8: 0x3f14edec    r9: 0x00000000     r10: 0x00188cc0     r11: 0x00185b40
      ip: 0x00000148    sp: 0x2fdff858      lr: 0x36331f5b      pc: 0x3376532c
    cpsr: 0x00000010
  </code></pre>
  </blockquote>
  
  <p>it seems like this line here is what I am looking for..</p>
  
  <blockquote>
  <pre><code>20  memoryChallenger                  0x000050d9 main (main.m:14)
  </code></pre>
  </blockquote>
  
  <p>and it's this line in main:</p>
  
  <blockquote>
  <pre><code>int retVal = UIApplicationMain(argc, argv, nil, nil);
  </code></pre>
  </blockquote>
  
  <p>But it's not getting me anywhere..</p>
  
  <p>Can someone please guide me to the right direction?
  Thanks!</p>