Question by 
               mukultictoc · Jan 17, 2018 at 01:19 AM · 
                iosunity5crashingstartupcrashreport  
              
 
              iOS builds crashes on Unity3d 5.6.4p1
][1]
Stacktrace for the crash :
 Thread 0 (crashed)
 0   libsystem_pthread.dylib             pthread_mutex_lock$VARIANT$mp 
 1   -                   PPtr<MonoBehaviour>::operator MonoBehaviour*() const 
 2   -                   AnimatorControllerPlayable::CleanupStateMachineBehaviours() 
 3   -                   AnimatorControllerPlayable::DeallocateResources() 
 4   -                   PlayableGraph::DestroyPendingPlayables() 
 5   -                   PlayableGraph::Destroy() 
 6   -                   DirectorManager::ProcessPlayStateChanges() 
 7   -                   DirectorManager::~DirectorManager() 
 8   -                   RuntimeStatic<DirectorManager, false>::Destroy() 
 9   -                   RegisterRuntimeInitializeAndCleanup::ExecuteCleanup() 
 10  -                   RuntimeCleanup() 
 11  -                   -[UnityAppController applicationWillTerminate:] 
 12  UIKit                               -[UIApplication _terminateWithStatus:] 
 13  UIKit                               __98-[__UICanvasLifecycleMonitor_Compatability deactivateEventsOnly:withContext:forceExit:completion:]_block_invoke.271 
 14  UIKit                               _runAfterCACommitDeferredBlocks 
 15  UIKit                               _cleanUpAfterCAFlushAndRunDeferredBlocks 
 16  UIKit                               _afterCACommitHandler 
 17  CoreFoundation                      __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 
 18  CoreFoundation                      __CFRunLoopDoObservers 
 19  CoreFoundation                      __CFRunLoopRun 
 20  CoreFoundation                      CFRunLoopRunSpecific 
 21  GraphicsServices                    GSEventRunModal 
 22  UIKit                               UIApplicationMain 
 23  -                   main 
 24  libdyld.dylib                       start 
 
 
               I am unable to find any information on why the crash happens, but its happening quite frequently in iOS builds. They were happening on Unity3d 5.5.4p1 and updating to 5.6.4p1 did not help.
 
                 
                screen-shot-2018-01-16-at-45427-pm.png 
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