title: Strange NSInternalInconsistencyException and PKService crash in iOS Today Extension
body: <p>I installed Crashlytics on my iOS Today Extension, and I am getting this strange crash. Does anyone know why this might be happening?</p>
  
  <blockquote>
    <p>Fatal Exception: NSInternalInconsistencyException
    removing inactive plug-in  com.somecompany.someapp.TodayExtension(1.0)></p>
  </blockquote>
  
  <p>The line that it is crashing on is</p>
  
  <blockquote>
    <p>11 PlugInKit  -[PKService unregisterPersonality:] + 188</p>
  </blockquote>
  
  <p>In my today extension, in viewDidLoad, it will get the user's current location, and then make a network request to fetch data about that location. Is this happening because my operation is taking too long and iOS is killing my extension? I haven't been able to reproduce this, but I think what user's see is a blank space where the extension should be or it doesn't show anything but the title of the extension.</p>
  
  <pre>
  
      Thread : Fatal Exception: NSInternalInconsistencyException
      0  CoreFoundation                 0x0000000181cc2530 __exceptionPreprocess + 132
      1  libobjc.A.dylib                0x0000000192c980e4 objc_exception_throw + 60
      2  CoreFoundation                 0x0000000181cc23f0 +[NSException raise:format:]
      3  Foundation                     0x0000000182b6dc34 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 112
      4  PlugInKit                      0x000000018d1c04a0 __35-[PKService unregisterPersonality:]_block_invoke + 488
      5  libdispatch.dylib              0x00000001932e9954 _dispatch_client_callout + 16
      6  libdispatch.dylib              0x00000001932f31e4 _dispatch_barrier_sync_f_invoke + 76
      7  PlugInKit                      0x000000018d1c024c -[PKService unregisterPersonality:] + 188
      8  PlugInKit                      0x000000018d1bdfec -[PKServicePersonality shutdownPlugIn] + 108
      9  CoreFoundation                 0x0000000181cc8350 __invoking___ + 144
      10 CoreFoundation                 0x0000000181bc621c -[NSInvocation invoke] + 296
      11 Foundation                     0x0000000182c9d33c __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT__ + 24
      12 Foundation                     0x0000000182b4b8c8 -[NSXPCConnection _decodeAndInvokeMessageWithData:] + 1604
      13 Foundation                     0x0000000182accbd4 message_handler + 708
      14 libxpc.dylib                   0x00000001934f0c78 _xpc_connection_call_event_handler + 68
      15 libxpc.dylib                   0x00000001934eeb7c _xpc_connection_mach_event + 2160
      16 libdispatch.dylib              0x00000001932e9a28 _dispatch_client_callout4 + 16
      17 libdispatch.dylib              0x00000001932ed140 _dispatch_mach_msg_invoke + 492
      18 libdispatch.dylib              0x00000001932f42d4 _dispatch_queue_drain + 2008
      19 libdispatch.dylib              0x00000001932ec668 _dispatch_mach_invoke + 136
      20 libdispatch.dylib              0x00000001932f42d4 _dispatch_queue_drain + 2008
      21 libdispatch.dylib              0x00000001932eca5c _dispatch_queue_invoke + 132
      22 libdispatch.dylib              0x00000001932f6318 _dispatch_root_queue_drain + 720
      23 libdispatch.dylib              0x00000001932f7c4c _dispatch_worker_thread3 + 108
      24 libsystem_pthread.dylib        0x00000001934c922c _pthread_wqthread + 816
      25 libsystem_pthread.dylib        0x00000001934c8ef0 start_wqthread + 4
  
  </pre>
  
  <pre>
  
      Thread : Crashed: service sync
      0  libsystem_kernel.dylib         0x000000019342f270 __pthread_kill + 8
      1  libsystem_pthread.dylib        0x00000001934cd170 pthread_kill + 112
      2  libsystem_c.dylib              0x00000001933a6b18 abort + 112
      3  libc++abi.dylib                0x0000000192465418 __cxa_bad_cast
      4  libc++abi.dylib                0x0000000192484b8c default_unexpected_handler()
      5  libobjc.A.dylib                0x0000000192c983c0 _objc_terminate() + 128
      6  libc++abi.dylib                0x0000000192481bb4 std::__terminate(void (*)()) + 16
      7  libc++abi.dylib                0x0000000192481c24 std::terminate() + 64
      8  libobjc.A.dylib                0x0000000192c98318 _destroyAltHandlerList
      9  libdispatch.dylib              0x00000001932e9968 _dispatch_client_callout + 36
      10 libdispatch.dylib              0x00000001932f31e4 _dispatch_barrier_sync_f_invoke + 76
      11 PlugInKit                      0x000000018d1c024c -[PKService unregisterPersonality:] + 188
      12 PlugInKit                      0x000000018d1bdfec -[PKServicePersonality shutdownPlugIn] + 108
      13 CoreFoundation                 0x0000000181cc8350 __invoking___ + 144
      14 CoreFoundation                 0x0000000181bc621c -[NSInvocation invoke] + 296
      15 Foundation                     0x0000000182c9d33c __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT__ + 24
      16 Foundation                     0x0000000182b4b8c8 -[NSXPCConnection _decodeAndInvokeMessageWithData:] + 1604
      17 Foundation                     0x0000000182accbd4 message_handler + 708
      18 libxpc.dylib                   0x00000001934f0c78 _xpc_connection_call_event_handler + 68
      19 libxpc.dylib                   0x00000001934eeb7c _xpc_connection_mach_event + 2160
      20 libdispatch.dylib              0x00000001932e9a28 _dispatch_client_callout4 + 16
      21 libdispatch.dylib              0x00000001932ed140 _dispatch_mach_msg_invoke + 492
      22 libdispatch.dylib              0x00000001932f42d4 _dispatch_queue_drain + 2008
      23 libdispatch.dylib              0x00000001932ec668 _dispatch_mach_invoke + 136
      24 libdispatch.dylib              0x00000001932f42d4 _dispatch_queue_drain + 2008
      25 libdispatch.dylib              0x00000001932eca5c _dispatch_queue_invoke + 132
      26 libdispatch.dylib              0x00000001932f6318 _dispatch_root_queue_drain + 720
      27 libdispatch.dylib              0x00000001932f7c4c _dispatch_worker_thread3 + 108
      28 libsystem_pthread.dylib        0x00000001934c922c _pthread_wqthread + 816
  
  </pre>
  
  <p>My main thread (did not crash here though):</p>
  
  <pre>
  
      Thread : com.apple.main-thread
      0  TodayExtension                 0x00000001000ae370 -[TodayViewController normalView] (TodayViewController.m:32)
      1  TodayExtension                 0x00000001000adf58 __36-[TodayViewController showErrorView]_block_invoke (TodayViewController.m:173)
      2  libdispatch.dylib              0x00000001932e9994 _dispatch_call_block_and_release + 24
      3  libdispatch.dylib              0x00000001932e9954 _dispatch_client_callout + 16
      4  libdispatch.dylib              0x00000001932ee20c _dispatch_main_queue_callback_4CF + 1608
      5  CoreFoundation                 0x0000000181c7a2ec __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
      6  CoreFoundation                 0x0000000181c78394 __CFRunLoopRun + 1492
      7  CoreFoundation                 0x0000000181ba51f4 CFRunLoopRunSpecific + 396
      8  GraphicsServices               0x000000018afc76fc GSEventRunModal + 168
      9  UIKit                          0x000000018653610c UIApplicationMain + 1488
      10 libxpc.dylib                   0x00000001934fc250 _xpc_objc_main + 768
      11 libxpc.dylib                   0x00000001934fdf38 xpc_main + 200
      12 Foundation                     0x0000000182ca1818 service_connection_handler
      13 PlugInKit                      0x000000018d1be910 -[PKService run] + 600
      14 PlugInKit                      0x000000018d1be548 +[PKService main] + 64
      15 PlugInKit                      0x000000018d1be938 +[PKService _defaultRun:arguments:] + 24
      16 libextension.dylib             0x00000001924f9960 NSExtensionMain + 68
      17 libdyld.dylib                  0x0000000193316a08 start + 4
  
  </pre>