title: class crashes on device not in simulator
body: <p>I have a problem with my iPhone app in Xcode 4.2 for iOS 6.
  My app is working and i have have a download button in het bottom bar. I you press this in the simulator it works fine and does his job. When i press the same button on the device with the same build of my app it crashes. I cant see any warnings in the console. But i have this crash report and the code of mine is below it. I have really no idea why this is not working on the device.</p>
  
  <pre><code>     OS Version:      iOS 6.0 (10A5338d)
  Report Version:  104
  
  Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
  Exception Codes: KERN_INVALID_ADDRESS at 0x52574c53
  Crashed Thread:  0
  
  Thread 0 name:  Dispatch queue: com.apple.main-thread
  Thread 0 Crashed:
  0   libobjc.A.dylib                 0x387ec5b0 0x387e9000 + 13744
  1   Foundation                      0x34cce0ba 0x34cc8000 + 24762
  2   CoreFoundation                  0x3034e5f8 0x302ae000 + 656888
  3   CoreFoundation                  0x302c2030 0x302ae000 + 81968
  4   Foundation                      0x34ccdfde 0x34cc8000 + 24542
  5   MusicTube                       0x0000d54a 0x1000 + 50506
  6   MusicTube                       0x0000d67e 0x1000 + 50814
  7   MusicTube                       0x0000bb86 0x1000 + 43910
  8   UIKit                           0x313ab4d2 0x31394000 + 95442
  9   UIKit                           0x31464f22 0x31394000 + 855842
  10  UIKit                           0x313ab4d2 0x31394000 + 95442
  11  UIKit                           0x313ab484 0x31394000 + 95364
  12  UIKit                           0x313ab45e 0x31394000 + 95326
  13  UIKit                           0x313ab1b4 0x31394000 + 94644
  14  UIKit                           0x313abb32 0x31394000 + 97074
  15  UIKit                           0x313a9f5a 0x31394000 + 89946
  16  UIKit                           0x31398126 0x31394000 + 16678
  17  UIKit                           0x31397a0a 0x31394000 + 14858
  18  GraphicsServices                0x375335ec 0x3752d000 + 26092
  19  GraphicsServices                0x3753321c 0x3752d000 + 25116
  20  CoreFoundation                  0x3034167c 0x302ae000 + 603772
  21  CoreFoundation                  0x30341620 0x302ae000 + 603680
  22  CoreFoundation                  0x3034041a 0x302ae000 + 599066
  23  CoreFoundation                  0x302bd7fe 0x302ae000 + 63486
  24  CoreFoundation                  0x302bd68a 0x302ae000 + 63114
  25  GraphicsServices                0x37532334 0x3752d000 + 21300
  26  UIKit                           0x313be1f6 0x31394000 + 172534
  27  MusicTube                       0x00013312 0x1000 + 74514
  28  MusicTube                       0x00003250 0x1000 + 8784
  
  Thread 1:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 2 name:  Dispatch queue: com.apple.libdispatch-manager
  Thread 2:
  0   libsystem_kernel.dylib          0x319765e0 0x31964000 + 75232
  1   libdispatch.dylib               0x348fb1fa 0x348f5000 + 25082
  2   libdispatch.dylib               0x348faed8 0x348f5000 + 24280
  
  Thread 3:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 4:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 5 name:  WebThread
  Thread 5:
  0   libsystem_kernel.dylib          0x319750b0 0x31964000 + 69808
  1   libsystem_c.dylib               0x366700aa 0x3665b000 + 86186
  2   WebCore                         0x35ac6336 0x35ac1000 + 21302
  3   WebCore                         0x35ac6698 0x35ac1000 + 22168
  4   CoreFoundation                  0x30341bd6 0x302ae000 + 605142
  5   CoreFoundation                  0x3033fe42 0x302ae000 + 597570
  6   CoreFoundation                  0x3034026e 0x302ae000 + 598638
  7   CoreFoundation                  0x302bd7fe 0x302ae000 + 63486
  8   CoreFoundation                  0x302bd68a 0x302ae000 + 63114
  9   WebCore                         0x35b32d06 0x35ac1000 + 466182
  10  libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  11  libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 6 name:  com.apple.NSURLConnectionLoader
  Thread 6:
  0   libsystem_kernel.dylib          0x31964f64 0x31964000 + 3940
  1   libsystem_kernel.dylib          0x31965142 0x31964000 + 4418
  2   CoreFoundation                  0x3034154e 0x302ae000 + 603470
  3   CoreFoundation                  0x30340224 0x302ae000 + 598564
  4   CoreFoundation                  0x302bd7fe 0x302ae000 + 63486
  5   CoreFoundation                  0x302bd68a 0x302ae000 + 63114
  6   Foundation                      0x34cd951e 0x34cc8000 + 70942
  7   Foundation                      0x34d727ee 0x34cc8000 + 698350
  8   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  9   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 7:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 8 name:  JavaScriptCore::BlockFree
  Thread 8:
  0   libsystem_kernel.dylib          0x31975040 0x31964000 + 69696
  1   libsystem_c.dylib               0x3666f608 0x3665b000 + 83464
  2   libsystem_c.dylib               0x366d1012 0x3665b000 + 483346
  3   JavaScriptCore                  0x390662f6 0x3900b000 + 373494
  4   JavaScriptCore                  0x391798e8 0x3900b000 + 1501416
  5   JavaScriptCore                  0x3918bf9c 0x3900b000 + 1576860
  6   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  7   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 9 name:  JavaScriptCore::Marking
  Thread 9:
  0   libsystem_kernel.dylib          0x31975040 0x31964000 + 69696
  1   libsystem_c.dylib               0x3666f608 0x3665b000 + 83464
  2   libsystem_c.dylib               0x366d0fe2 0x3665b000 + 483298
  3   JavaScriptCore                  0x3910d302 0x3900b000 + 1057538
  4   JavaScriptCore                  0x3910d242 0x3900b000 + 1057346
  5   JavaScriptCore                  0x3918bf9c 0x3900b000 + 1576860
  6   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  7   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 10 name:  WebCore: CFNetwork Loader
  Thread 10:
  0   libsystem_kernel.dylib          0x31964f64 0x31964000 + 3940
  1   libsystem_kernel.dylib          0x31965142 0x31964000 + 4418
  2   CoreFoundation                  0x3034154e 0x302ae000 + 603470
  3   CoreFoundation                  0x30340224 0x302ae000 + 598564
  4   CoreFoundation                  0x302bd7fe 0x302ae000 + 63486
  5   CoreFoundation                  0x302bd68a 0x302ae000 + 63114
  6   WebCore                         0x35b52088 0x35ac1000 + 594056
  7   JavaScriptCore                  0x3918bf9c 0x3900b000 + 1576860
  8   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  9   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 11 name:  WebCore: LocalStorage
  Thread 11:
  0   libsystem_kernel.dylib          0x31975040 0x31964000 + 69696
  1   libsystem_c.dylib               0x3666f608 0x3665b000 + 83464
  2   libsystem_c.dylib               0x366d0fe2 0x3665b000 + 483298
  3   JavaScriptCore                  0x390662c8 0x3900b000 + 373448
  4   WebCore                         0x3620e4ce 0x35ac1000 + 7656654
  5   WebCore                         0x3620e2d2 0x35ac1000 + 7656146
  6   JavaScriptCore                  0x3918bf9c 0x3900b000 + 1576860
  7   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  8   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 12 name:  com.apple.CFSocket.private
  Thread 12:
  0   libsystem_kernel.dylib          0x31975548 0x31964000 + 70984
  1   CoreFoundation                  0x303456e0 0x302ae000 + 620256
  2   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  3   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 13:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 14 name:  com.apple.coremedia.player.async
  Thread 14:
  0   libsystem_kernel.dylib          0x31975040 0x31964000 + 69696
  1   libsystem_c.dylib               0x3666f608 0x3665b000 + 83464
  2   libsystem_c.dylib               0x366d0fe2 0x3665b000 + 483298
  3   CoreMedia                       0x3074cf3a 0x30749000 + 16186
  4   MediaToolbox                    0x34f9692c 0x34f92000 + 18732
  5   CoreMedia                       0x30770d28 0x30749000 + 163112
  6   libsystem_c.dylib               0x3666bc36 0x3665b000 + 68662
  7   libsystem_c.dylib               0x3665b9b0 0x3665b000 + 2480
  
  Thread 15:
  0   libsystem_kernel.dylib          0x31975d24 0x31964000 + 72996
  1   libsystem_c.dylib               0x3666dd00 0x3665b000 + 77056
  2   libsystem_c.dylib               0x3666db46 0x3665b000 + 76614
  3   libsystem_c.dylib               0x3665b9a4 0x3665b000 + 2468
  
  Thread 0 crashed with ARM Thread State (32-bit):
      r0: 0x3ace9b54    r1: 0x35306320      r2: 0x303d8bd0      r3: 0xffffffff
      r4: 0x52574c4b    r5: 0x00000000      r6: 0x303d8bd0      r7: 0x2fdfd5c8
      r8: 0x2fdfdbdc    r9: 0x0d4c18c8     r10: 0x2fdfd6c4     r11: 0x004468b0
      ip: 0x3a4af6f8    sp: 0x2fdfd5b4      lr: 0x34cce0c1      pc: 0x387ec5b0
    cpsr: 0x20070030
  
  Binary Images:
      0x1000 -    0x93fff +MusicTube armv7  &lt;ca75c5c085683a9ea3236afc5eaf836e&gt; /var/mobile/Applications/4282E492-9720-4333-ADCC-681C0B2FE6CF/MusicTube.app/MusicTube
  0x2fed0000 - 0x2fef0fff  dyld armv7  &lt;d7b9e4bc402f3645b9273bb202cdce5b&gt; /usr/lib/dyld
  0x302ae000 - 0x303defff  CoreFoundation armv7  &lt;4ad30769f9aa301a9157428dec03a3dd&gt; /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
  0x303df000 - 0x303f2fff  libc++abi.dylib armv7  &lt;784fa6dc68b13e44b9b970954081ac8e&gt; /usr/lib/libc++abi.dylib
  0x30402000 - 0x30407fff  libGPUSupportMercury.dylib armv7  &lt;3244792c47e034c292cf30f92fae6415&gt; /System/Library/PrivateFrameworks/GPUSupport.framework/libGPUSupportMercury.dylib
  0x30444000 - 0x30445fff  libremovefile.dylib armv7  &lt;38160b3c19643564a6b0e59da62e0b4f&gt; /usr/lib/system/libremovefile.dylib
  0x30446000 - 0x30462fff  libsystem_info.dylib armv7  &lt;18abea0052573ae09f79c794c427c4b1&gt; /usr/lib/system/libsystem_info.dylib
  0x304d1000 - 0x304d6fff  Marco armv7  &lt;db14228e2c0b3950ba3fcf3cea3f0db9&gt; /System/Library/PrivateFrameworks/Marco.framework/Marco
  0x304f4000 - 0x30504fff  Accounts armv7  &lt;8e485280e65a379589e3ab6efdb64662&gt; /System/Library/Frameworks/Accounts.framework/Accounts
  0x30737000 - 0x30748fff  SpringBoardServices armv7  &lt;85374d8eea603f5e8ec2f2f781195b14&gt; /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices
  0x30749000 - 0x307f3fff  CoreMedia armv7  &lt;04ca5e9301bf30b587c3914fdd3297cd&gt; /System/Library/Frameworks/CoreMedia.framework/CoreMedia
  0x308bf000 - 0x308d2fff  DataDetectorsUI armv7  &lt;947d3af81d0c3196a4aa6b0b2bee0286&gt; /System/Library/PrivateFrameworks/DataDetectorsUI.framework/DataDetectorsUI
  0x308d3000 - 0x30b88fff  libLAPACK.dylib armv7  &lt;cd0afaa5d938333eb2503c2aa7d7e3a4&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLAPACK.dylib
  0x30b89000 - 0x30c36fff  libxml2.2.dylib armv7  &lt;7b824bb27f413d2ab1b3af9dbc5022fd&gt; /usr/lib/libxml2.2.dylib
  0x30d90000 - 0x30e44fff  CoreImage armv7  &lt;1ab1bb1d30453d9c9bed231d23d30212&gt; /System/Library/Frameworks/CoreImage.framework/CoreImage
  0x30f6c000 - 0x30fa6fff  libCGFreetype.A.dylib armv7  &lt;9ae41e8cec1d3c4e8a09c43f83212369&gt; /System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib
  0x30fa7000 - 0x30fbffff  EAP8021X armv7  &lt;f39f04d92a973e1cb4688554b5b42262&gt; /System/Library/PrivateFrameworks/EAP8021X.framework/EAP8021X
  0x30fc0000 - 0x30fc7fff  MobileIcons armv7  &lt;96ada0b2450f371c890c751a4688a9e5&gt; /System/Library/PrivateFrameworks/MobileIcons.framework/MobileIcons
  0x31028000 - 0x311fefff  ImageIO armv7  &lt;1ea0cf77b7003199b14d57557cc8952f&gt; /System/Library/Frameworks/ImageIO.framework/ImageIO
  0x31368000 - 0x31388fff  libxslt.1.dylib armv7  &lt;334026b61da23d92aefe0df7d3155935&gt; /usr/lib/libxslt.1.dylib
  0x31394000 - 0x318c5fff  UIKit armv7  &lt;dd048816d3af3d64b86a549312304690&gt; /System/Library/Frameworks/UIKit.framework/UIKit
  0x318c6000 - 0x318cbfff  libcopyfile.dylib armv7  &lt;c030a190a5ce33d187a875910f86f352&gt; /usr/lib/system/libcopyfile.dylib
  0x31962000 - 0x31963fff  libsystem_sandbox.dylib armv7  &lt;463060b8044a3f66932432d98afa0497&gt; /usr/lib/system/libsystem_sandbox.dylib
  0x31964000 - 0x3197afff  libsystem_kernel.dylib armv7  &lt;eff667260cfc374691ad67ab35205e8a&gt; /usr/lib/system/libsystem_kernel.dylib
  0x31a46000 - 0x31a49fff  MobileSystemServices armv7  &lt;0fd5382615e9366d97942c16ebf47b3b&gt; /System/Library/PrivateFrameworks/MobileSystemServices.framework/MobileSystemServices
  0x31ab0000 - 0x31b21fff  GameKitServices armv7  &lt;930fdaa9d16a3e6db8101246472c3a6d&gt; /System/Library/PrivateFrameworks/GameKitServices.framework/GameKitServices
  0x31b4c000 - 0x31cf2fff  CoreData armv7  &lt;5f6308d43f103850a05cf28b96f66e0b&gt; /System/Library/Frameworks/CoreData.framework/CoreData
  0x31d4a000 - 0x31d4cfff  TCC armv7  &lt;f268be00645f3170b0a5a06d2a77156b&gt; /System/Library/PrivateFrameworks/TCC.framework/TCC
  0x31d4d000 - 0x31d4ffff  MessageSupport armv7  &lt;9188a2a529e035cc88c200aea45f151b&gt; /System/Library/PrivateFrameworks/MessageSupport.framework/MessageSupport
  0x3201d000 - 0x3207efff  AddressBook armv7  &lt;acaf0922af2b39718de5de6ee535ff18&gt; /System/Library/Frameworks/AddressBook.framework/AddressBook
  0x320e5000 - 0x320eefff  AssetsLibraryServices armv7  &lt;540f37f13ee739aca989c84469e8cc87&gt; /System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices
  0x320ef000 - 0x320f1fff  libCoreVMClient.dylib armv7  &lt;4375a2def6b331c7a152faeef9658318&gt; /System/Library/Frameworks/OpenGLES.framework/libCoreVMClient.dylib
  0x3210d000 - 0x3210dfff  libSystem.B.dylib armv7  &lt;08ba5c97c9413e16b336c7e5ccfc7edf&gt; /usr/lib/libSystem.B.dylib
  0x3210e000 - 0x3210efff  LegacyHandle armv7  &lt;985a58f3a0923546a825a6c899955aa6&gt; /System/Library/PrivateFrameworks/GameKitServices.framework/Frameworks/LegacyHandle.framework/LegacyHandle
  0x32144000 - 0x3214cfff  XPCObjects armv7  &lt;719dac9cf6073f4a9a0e3bb662eb4601&gt; /System/Library/PrivateFrameworks/XPCObjects.framework/XPCObjects
  0x3214f000 - 0x32169fff  ICE armv7  &lt;b22eb8a170e334d0bb946dcdb383e279&gt; /System/Library/PrivateFrameworks/GameKitServices.framework/Frameworks/ICE.framework/ICE
  0x32185000 - 0x32187fff  libcompiler_rt.dylib armv7  &lt;b0138f0a044636029479a12709942ee9&gt; /usr/lib/system/libcompiler_rt.dylib
  0x32260000 - 0x32276fff  libCRFSuite.dylib armv7  &lt;d25b0355b59131cbbd248a2e9f1e63b1&gt; /usr/lib/libCRFSuite.dylib
  0x3229b000 - 0x322b0fff  libxpc.dylib armv7  &lt;97ea074dabc03708a2129c7f95415be8&gt; /usr/lib/system/libxpc.dylib
  0x322b1000 - 0x322b6fff  liblaunch.dylib armv7  &lt;0830a7f70cfe315981e1f7f18da92250&gt; /usr/lib/system/liblaunch.dylib
  0x322b7000 - 0x322b7fff  libgcc_s.1.dylib armv7  &lt;d9dd15a5f9bd34b390c2b5c2fe0cef75&gt; /usr/lib/libgcc_s.1.dylib
  0x322b8000 - 0x32313fff  CoreAudio armv7  &lt;cd166a98944232439821716615c46084&gt; /System/Library/Frameworks/CoreAudio.framework/CoreAudio
  0x32314000 - 0x3231bfff  liblockdown.dylib armv7  &lt;e436520914613108901f3e97f795888f&gt; /usr/lib/liblockdown.dylib
  0x32321000 - 0x3232cfff  AccountSettings armv7  &lt;d01d04bb6e463edca358926279e045df&gt; /System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings
  0x3232d000 - 0x32333fff  CaptiveNetwork armv7  &lt;6a0e7df489c93e658ff721f4d0936830&gt; /System/Library/PrivateFrameworks/CaptiveNetwork.framework/CaptiveNetwork
  0x323ae000 - 0x323e9fff  AppSupport armv7  &lt;70ca3d7feed837749369e731f48cd76f&gt; /System/Library/PrivateFrameworks/AppSupport.framework/AppSupport
  0x323ea000 - 0x3246ffff  libsqlite3.dylib armv7  &lt;4cc671204eba384fbc95078f591653b3&gt; /usr/lib/libsqlite3.dylib
  0x3247f000 - 0x32486fff  libsystem_notify.dylib armv7  &lt;340bd67f3cde3180a7381477e23d00f6&gt; /usr/lib/system/libsystem_notify.dylib
  0x32589000 - 0x3258afff  DataMigration armv7  &lt;05f2355f556a3a15b0a585570ed7dd10&gt; /System/Library/PrivateFrameworks/DataMigration.framework/DataMigration
  0x3258b000 - 0x32667fff  WebKit armv7  &lt;8313503ad8fc33d4939878ad9bb04933&gt; /System/Library/PrivateFrameworks/WebKit.framework/WebKit
  0x32a8f000 - 0x32a9cfff  ExternalAccessory armv7  &lt;57f9ab7f369731b893ce2446eed28825&gt; /System/Library/Frameworks/ExternalAccessory.framework/ExternalAccessory
  0x32a9d000 - 0x32aaafff  ViceroyTrace armv7  &lt;3b746210ec423f41985dc8fa3332bb86&gt; /System/Library/PrivateFrameworks/GameKitServices.framework/Frameworks/ViceroyTrace.framework/ViceroyTrace
  0x32aab000 - 0x32aaffff  IOSurface armv7  &lt;c83b1d9390763180a40ff7b7b3d9ae96&gt; /System/Library/PrivateFrameworks/IOSurface.framework/IOSurface
  0x32bcd000 - 0x32cd6fff  IMGSGX543GLDriver armv7  &lt;4c8385245e5e33a28ff6fd141a2c1d81&gt; /System/Library/Extensions/IMGSGX543GLDriver.bundle/IMGSGX543GLDriver
  0x32cf0000 - 0x32db3fff  CFNetwork armv7  &lt;6320d69fb5f3380495c17df1ad3d841a&gt; /System/Library/Frameworks/CFNetwork.framework/CFNetwork
  0x32db4000 - 0x32e14fff  CoreText armv7  &lt;3575b536a6913020ac6196bac69358d7&gt; /System/Library/Frameworks/CoreText.framework/CoreText
  0x32e1b000 - 0x32e32fff  BackBoardServices armv7  &lt;2ad8b45f0c17313db055696c5e9ccc88&gt; /System/Library/PrivateFrameworks/BackBoardServices.framework/BackBoardServices
  0x32e4d000 - 0x32ec8fff  HomeSharing armv7  &lt;b58412ff72913758a1318e57ee06e764&gt; /System/Library/PrivateFrameworks/HomeSharing.framework/HomeSharing
  0x32ed2000 - 0x32ed8fff  BluetoothManager armv7  &lt;6dcf77969a583894b5d4d1e0a88fe646&gt; /System/Library/PrivateFrameworks/BluetoothManager.framework/BluetoothManager
  0x33092000 - 0x33094fff  OAuth armv7  &lt;f000496cc0963e8a834f846f87ec8518&gt; /System/Library/PrivateFrameworks/OAuth.framework/OAuth
  0x330ae000 - 0x330b4fff  MobileKeyBag armv7  &lt;adf7ce0d8e5137408aa693be43476068&gt; /System/Library/PrivateFrameworks/MobileKeyBag.framework/MobileKeyBag
  0x331ee000 - 0x33209fff  libRIP.A.dylib armv7  &lt;81ad7b74aca23cf8b11fabaeefa4fe4b&gt; /System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib
  0x33258000 - 0x332a2fff  VideoToolbox armv7  &lt;5b9453f4d1573c7783806690d4477572&gt; /System/Library/Frameworks/VideoToolbox.framework/VideoToolbox
  0x332a3000 - 0x332a5fff  MobileInstallation armv7  &lt;42f6d5bb05b7357fa5f6aa642b9f5924&gt; /System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation
  0x332a6000 - 0x333e5fff  vImage armv7  &lt;4fec5d5386483ff9842f3bd846b64c5e&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vImage.framework/vImage
  0x333e6000 - 0x33423fff  libGLImage.dylib armv7  &lt;06c2c3c54f6c394db2fee2e6e6f0767b&gt; /System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib
  0x33438000 - 0x33480fff  IOKit armv7  &lt;85a617f1e07f3b90ade1b2242f65d631&gt; /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
  0x33481000 - 0x33484fff  libmacho.dylib armv7  &lt;33c2fb9e67f539fea34af006450316c4&gt; /usr/lib/system/libmacho.dylib
  0x33485000 - 0x335bcfff  CoreGraphics armv7  &lt;fdbaa340412b395095c8f286d4684b7f&gt; /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics
  0x335bd000 - 0x336e2fff  libGLProgrammability.dylib armv7  &lt;19eac922a76c38ffa3050a2bf049bc50&gt; /System/Library/Frameworks/OpenGLES.framework/libGLProgrammability.dylib
  0x336e3000 - 0x3372efff  libstdc++.6.dylib armv7  &lt;bded282eb5b03084b5e4ce32cf12a543&gt; /usr/lib/libstdc++.6.dylib
  0x3372f000 - 0x33736fff  SimpleKeyExchange armv7  &lt;8a72bd8fe3333920bda1c799cbc45545&gt; /System/Library/PrivateFrameworks/GameKitServices.framework/Frameworks/SimpleKeyExchange.framework/SimpleKeyExchange
  0x337a8000 - 0x337abfff  libcache.dylib armv7  &lt;a3d5fcc87c6532b78cdad77e6b8e42a0&gt; /usr/lib/system/libcache.dylib
  0x33810000 - 0x33819fff  libcommonCrypto.dylib armv7  &lt;56b2960008c4374b8061318537feecdc&gt; /usr/lib/system/libcommonCrypto.dylib
  0x33824000 - 0x33838fff  QuickTime Plugin armv7  &lt;a37bd4c4a26135d2a86422ce3ea5a93f&gt; /System/Library/Internet Plug-Ins/QuickTime Plugin.webplugin/QuickTime Plugin
  0x338ef000 - 0x3392dfff  FTServices armv7  &lt;256ef4f8868234daa096d9d5c5f60885&gt; /System/Library/PrivateFrameworks/FTServices.framework/FTServices
  0x3393f000 - 0x339c3fff  CoreMotion armv7  &lt;691d1e9c76793d90a9ba3c55cf9b4c7a&gt; /System/Library/Frameworks/CoreMotion.framework/CoreMotion
  0x33b2d000 - 0x33c0bfff  GeoServices armv7  &lt;eb59528424cf378db229ffab6f84eebd&gt; /System/Library/PrivateFrameworks/GeoServices.framework/GeoServices
  0x33c1e000 - 0x33c75fff  CoreLocation armv7  &lt;f751994a0003369094655d5a0cd034fd&gt; /System/Library/Frameworks/CoreLocation.framework/CoreLocation
  0x33c76000 - 0x33c8dfff  DictionaryServices armv7  &lt;441a6e90d20e390bbe97cda0210bff95&gt; /System/Library/PrivateFrameworks/DictionaryServices.framework/DictionaryServices
  0x33ccd000 - 0x33e0efff  MusicLibrary armv7  &lt;3d53487b66c531b7a14342d98377f928&gt; /System/Library/PrivateFrameworks/MusicLibrary.framework/MusicLibrary
  0x33e0f000 - 0x33e10fff  CoreSurface armv7  &lt;1b5a6405204a353f84c47229f67ed821&gt; /System/Library/PrivateFrameworks/CoreSurface.framework/CoreSurface
  0x343aa000 - 0x343aafff  libkeymgr.dylib armv7  &lt;47d229f23d7d3bfb85255b8b5bd060d9&gt; /usr/lib/system/libkeymgr.dylib
  0x3448f000 - 0x344e1fff  CoreTelephony armv7  &lt;dc6226e84f47398fbad71eaf5f8a279c&gt; /System/Library/Frameworks/CoreTelephony.framework/CoreTelephony
  0x344e2000 - 0x345cefff  VideoProcessing armv7  &lt;6fb05fd13a8f335f98f31296e9ae204a&gt; /System/Library/PrivateFrameworks/VideoProcessing.framework/VideoProcessing
  0x345d3000 - 0x34601fff  Security armv7  &lt;7003574db767355dbba2f94c068ad80e&gt; /System/Library/Frameworks/Security.framework/Security
  0x34602000 - 0x34602fff  libsystem_blocks.dylib armv7  &lt;dbcfd2ac7c353d23b5e0739673e64dda&gt; /usr/lib/system/libsystem_blocks.dylib
  0x3461b000 - 0x34628fff  TelephonyUtilities armv7  &lt;3f91a39c06df38b28a669734e352ba88&gt; /System/Library/PrivateFrameworks/TelephonyUtilities.framework/TelephonyUtilities
  0x34676000 - 0x3468bfff  libmis.dylib armv7  &lt;9dee2ef2cf6535859de820ac85c83c34&gt; /usr/lib/libmis.dylib
  0x3468c000 - 0x346a8fff  libsystem_m.dylib armv7  &lt;0d0a1f0223d8344fb20a272398867db1&gt; /usr/lib/system/libsystem_m.dylib
  0x346a9000 - 0x346dbfff  MobileAsset armv7  &lt;b65a6e27c7383104a37ea9551ae37859&gt; /System/Library/PrivateFrameworks/MobileAsset.framework/MobileAsset
  0x346e0000 - 0x346e1fff  IOAccelerator armv7  &lt;59eec0834b4736bc8c9e8ba06029b38b&gt; 
  </code></pre>
  
  <p>My code to activate the class in the IBAction:</p>
  
  <pre><code>- (IBAction)download 
  {
      DownloadInfo *dinfo=[self trySetUpDownload];
      if ([[dinfo FileTitle] length] &gt;0 &amp;&amp; [[dinfo FileUrl] length] &gt;0)
      {
          [downloadButton setEnabled:NO];
          dinfo.delegate = self;
          [dinfo setUp:YES];
          [toolbar addSubview:dinfo.bar];
      }
  }
  </code></pre>