I have developed and distributed a Mac app on App Store. From the Organizer in Xcode, I noticed that it has a lot of crashes. And 90% of these crashes is the same crash as following: Thread 0 Crashed: 0 libsystem_kernel.dylib 0x00007ff81ce27112 __pthread_kill + 10 1 libsystem_pthread.dylib 0x00007ff81ce5d233 pthread_kill + 263 2 libsystem_c.dylib 0x00007ff81cda9d10 abort + 123 3 libc++abi.dylib 0x00007ff81ce1a0b2 abort_message + 241 4 libc++abi.dylib 0x00007ff81ce0b1fd demangling_terminate_handler() + 266 5 libobjc.A.dylib 0x00007ff81cd08509 _objc_terminate() + 96 6 libc++abi.dylib 0x00007ff81ce194d7 std::__terminate(void (*)()) + 8 7 libc++abi.dylib 0x00007ff81ce19488 std::terminate() + 56 8 libdispatch.dylib 0x00007ff81cca6cdd _dispatch_client_callout + 28 9 libdispatch.dylib 0x00007ff81cca9746 _dispatch_continuation_pop + 460 10 libdispatch.dylib 0x00007ff81ccbaa5a _dispatch_source_invoke + 2150 11 libdispatch.dylib 0x00007ff81ccb3518 _dispatch_main_queue_callback_4CF + 759 12 CoreFoundation 0x00007ff81cf625d9 CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9 13 CoreFoundation 0x00007ff81cf236ae __CFRunLoopRun + 2752 14 CoreFoundation 0x00007ff81cf2252d CFRunLoopRunSpecific + 563 15 HIToolbox 0x00007ff825b403e1 RunCurrentEventLoopInMode + 292 16 HIToolbox 0x00007ff825b40137 ReceiveNextEventCommon + 587 17 HIToolbox 0x00007ff825b3fed5 _BlockUntilNextEventMatchingListInModeWithFilter + 70 18 AppKit 0x00007ff81f94d8f0 _DPSNextEvent + 886 19 AppKit 0x00007ff81f94bf5c -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1411 20 AppKit 0x00007ff81f93e359 -[NSApplication run] + 586 21 AppKit 0x00007ff81f9121f8 NSApplicationMain + 816 How to fix this issue?