This is a longstanding but low frequency Mac crash. Users have not provided any descriptions of their actions when the crash occurred.
Callstack from Log
[2017.10.26-22.22.57:828][183]LogSavePackage: Save=9.67ms [2017.10.26-22.22.57:828][183]LogSavePackage: Async saving from memory to '/Users/pomeboys/Documents/Unreal Projects/MyProject/Saved/EditorCooked/MacNoEditor/Engine/Content/EngineFonts/Faces/RobotoBoldItalic.uasset' [2017.10.26-22.22.57:828][183]LogSavePackage: Display: Finished SavePackage /Users/pomeboys/Documents/Unreal Projects/MyProject/Saved/EditorCooked/MacNoEditor/Engine/Content/EngineFonts/Faces/RobotoBoldItalic.uasset [2017.10.26-22.22.58:341][184]LogExit: Preparing to exit. [2017.10.26-22.22.58:712][184]LogMac: === Critical error: === SIGSEGV: invalid attempt to access memory at address 0x0 [2017.10.26-22.22.58:712][184]LogMac: 0x13b972bf UE4Editor-UnrealEd.dylib!TBaseUObjectMethodDelegateInstance<false, UEditorEngine, TTypeWrapper<void> ()>::Execute() const [UnknownFile]) 0x20647fa2 UE4Editor-LauncherServices.dylib!FLauncherWorker::CreateAndExecuteTasks(TSharedRef<ILauncherProfile, (ESPMode)0> const&)::FWaitForCookInEditorToFinish::PerformTask(FLauncherTaskChainState&) [UnknownFile]) 0x2064705c UE4Editor-LauncherServices.dylib!FLauncherTask::Run() [UnknownFile]) 0x0c77169e UE4Editor-Core.dylib!FRunnableThreadPThread::Run() [UnknownFile]) 0x0c71c3e7 UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc(void*) [UnknownFile]) 0xd37c893b libsystem_pthread.dylib!_pthread_body() [UnknownFile]) 0xd37c8887 libsystem_pthread.dylib!_pthread_body() [UnknownFile]) 0xd37c808d libsystem_pthread.dylib!thread_start() [UnknownFile])
repro steps currently unknown
SEGV_MAPERR at 0x0 UE4Editor-UnrealEd.dylib!TBaseUObjectMethodDelegateInstance<false, UEditorEngine, TTypeWrapper<void> ()>::Execute() UE4Editor-LauncherServices.dylib!FLauncherWorker::CreateAndExecuteTasks(TSharedRef<ILauncherProfile, (ESPMode)0> const&)::FWaitForCookInEditorToFinish::PerformTask() UE4Editor-LauncherServices.dylib!FLauncherTask::Run() UE4Editor-Core.dylib!FRunnableThreadPThread::Run() UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc() libsystem_pthread.dylib!<Unknown> libsystem_pthread.dylib!<Unknown> libsystem_pthread.dylib!<Unknown>
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-52295 in the post.