title: iOS: Need help figuring out this crash "Crashed: NSOperationQueue Serial Queue EXC_BAD_ACCESS KERN_INVALID_ADDRESS at 0x00000000"
body: <p>This is the crash report I received from crashlytics and I don't have the slightest clue on what it means or what to do about this. Any tips or suggestions will be appreciated.</p>
  
  <pre><code> Thread : Crashed: NSOperationQueue Serial Queue
   0  libsystem_platform.dylib       0x3baef4da _platform_memmove$VARIANT$Swift + 185
   1  ???                            0x0000000c 
   2  DataDetectorsCore              0x350b26bb DDTokenCacheGetItemAtIndexCreateIfNeeded + 90
   3  DataDetectorsCore              0x350b2635 DDTokenCacheGetTokensAtPosition + 1084
   4  DataDetectorsCore              0x350ae41d _DDScannerHandleState + 472
   5  DataDetectorsCore              0x350aea71 _DDScannerHandleState + 2092
   6  DataDetectorsCore              0x350addf1 DDScannerScanQuery + 328
   7  DataDetectorsUI                0x350c8f7d -[DDOperation main] + 288
   8  Foundation                     0x31664aa5 -[__NSOperationInternal _start:] + 772
   9  Foundation                     0x3170896d __NSOQSchedule_f + 60
  10 libdispatch.dylib              0x3b9c5e7b _dispatch_queue_drain + 374
  11 libdispatch.dylib              0x3b9c2f93 _dispatch_queue_invoke + 42
  12 libdispatch.dylib              0x3b9c6745 _dispatch_root_queue_drain + 76
  13 libdispatch.dylib              0x3b9c69c5 _dispatch_worker_thread2 + 56
  14 libsystem_pthread.dylib        0x3baf0dff _pthread_wqthread + 298
  </code></pre>