title: Reporting crash on UITableview reloadData
body: <p>I'm getting a crash report from Crashlytics that is always in the same place but I'm unable to replicate the crash. </p>
  
  <p>It seems to be only users on iOS 9 and only very occasionally. I'm not sure if it's a code issue or something else. The last line mentions <code>libdispatch.dylib</code> as being missing, again, not sure if relevant.</p>
  
  <p>Crashlytics indicates that the crash occurs at <code>MMDetailTableVC.m</code> line 1407, which is the <code>reloadData</code> line.</p>
  
  <p>Here's what is reported:</p>
  
  <pre><code>Crashed: com.apple.main-thread
  EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000001
  
  Thread : Crashed: com.apple.main-thread
  0  libobjc.A.dylib           0x20f0fae2 objc_msgSend + 1
  1  CoreFoundation            0x2168b91b -[NSDictionary descriptionWithLocale:indent:] + 310
  2  Foundation                0x21e77e2d _NSDescriptionWithLocaleFunc + 60
  3  CoreFoundation            0x217091a3 __CFStringAppendFormatCore + 7986
  4  CoreFoundation            0x21707255 _CFStringCreateWithFormatAndArgumentsAux2 + 80
  5  CoreFoundation            0x2171f559 _CFLogvEx2 + 96
  6  CoreFoundation            0x2171f9af _CFLogvEx3 + 118
  7  Foundation                0x21f3f4f7 _NSLogv + 126
  8  Foundation                0x21e8679d NSLog + 28
  9  UIKit                     0x259b45fb -[UITableView reloadData] + 1818
  10 Simple Meeting Minutes    0x91fff -[MMDetailTableVC saveItemEntry:] (MMDetailTableVC.m:1407)
  11 Simple Meeting Minutes    0xa2edf -[MMItemViewController saveButtonAction:] (MMItemViewController.m:526)
  12 UIKit                     0x25905771 -[UIApplication sendAction:to:from:forEvent:] + 80
  13 UIKit                     0x25a86c71 -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 140
  14 UIKit                     0x25905771 -[UIApplication sendAction:to:from:forEvent:] + 80
  15 UIKit                     0x25905701 -[UIControl sendAction:to:forEvent:] + 64
  16 UIKit                     0x258ed61f -[UIControl _sendActionsForEvents:withEvent:] + 446
  17 UIKit                     0x258ed74b -[UIControl _sendActionsForEvents:withEvent:] + 746
  18 UIKit                     0x25905051 -[UIControl touchesEnded:withEvent:] + 616
  19 UIKit                     0x25904cbf -[UIWindow _sendTouchesForEvent:] + 646
  20 UIKit                     0x258fd5d7 -[UIWindow sendEvent:] + 642
  21 UIKit                     0x258ce119 -[UIApplication sendEvent:] + 204
  22 UIKit                     0x258cc757 _UIApplicationHandleEventQueue + 5134
  23 CoreFoundation            0x216f9257 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14
  24 CoreFoundation            0x216f8e47 __CFRunLoopDoSources0 + 454
  25 CoreFoundation            0x216f71af __CFRunLoopRun + 806
  26 CoreFoundation            0x21649bb9 CFRunLoopRunSpecific + 516
  27 CoreFoundation            0x216499ad CFRunLoopRunInMode + 108
  28 GraphicsServices          0x228c3af9 GSEventRunModal + 160
  29 UIKit                     0x25935fb5 UIApplicationMain + 144
  30 Simple Meeting Minutes    0x8c59f main (main.m:16)
  31 libdispatch.dylib         0x212fc873 (Missing)
  </code></pre>
  
  <p>And here's my code for <code>saveItemEntry</code> that always seems to be the place where the crash occurs.</p>
  
  <pre><code>- (void)saveItemEntry:(MMitem *)item{
  
      if (item)
      {
           NSString *resultStr = [self.meetingModel saveItem:item];
  
          if ([resultStr isEqualToString:@"OK"])
          {
              // all good so close form and refresh data
              [_itemViewController dismissViewControllerAnimated:NO completion:nil];
  
              [self.tableView reloadData];
  
              // or if there is an error result then display message
          }
          else if ([resultStr isEqualToString:@"DescriptionNotesMissing"])
          {
              [self showAlert:@"Missing Description or Notes" :@"An Item Description or Notes is required" :0];
              [self.itemViewController.itemDescription becomeFirstResponder];
          }
          // for any other error do nothing
      }
  }
  </code></pre>