I’ve been having a problem where the editor crashes every time i attempt to build blueprints, any time after I run it. Similar crashes have been happening since Unreal Engine 4.11, but not with such pinpoint consistency. If it doesn’t crash, the editor will just hang indefinitely instead.
I’m currently running Mac OS X El Capitan 10.11.4
MachineId:EC6F56E41A43823F8627D58B41E7E55A
EpicAccountId:41cc330106944b1689224823efbb51ec
SEGV_MAPERR at 0x8
StaticDuplicateObject(UObject const*, UObject*, FName, EObjectFlags, UClass*, EDuplicateForPie, EInternalObjectFlags) Address = 0x110104300 (filename not found) [in UE4Editor-CoreUObject.dylib]
UWidgetBlueprintGeneratedClass::InitializeWidgetStatic(UUserWidget*, UClass const*, bool, bool, UWidgetTree*, TArray<UWidgetAnimation*, FDefaultAllocator> const&, TArray<FDelegateRuntimeBinding, FDefaultAllocator> const&, UWidgetTree*) Address = 0x11b55565c (filename not found) [in UE4Editor-UMG.dylib]
UUserWidget::Initialize() Address = 0x11b549168 (filename not found) [in UE4Editor-UMG.dylib]
StaticDuplicateObjectEx(FObjectDuplicationParameters&) Address = 0x1101059c1 (filename not found) [in UE4Editor-CoreUObject.dylib]
StaticDuplicateObject(UObject const*, UObject*, FName, EObjectFlags, UClass*, EDuplicateForPie, EInternalObjectFlags) Address = 0x110104458 (filename not found) [in UE4Editor-CoreUObject.dylib]
FBlueprintCompileReinstancer::FBlueprintCompileReinstancer(UClass*, bool, bool, bool) Address = 0x117e34b8b (filename not found) [in UE4Editor-UnrealEd.dylib]
FBlueprintCompileReinstancer::Create(UClass*, bool, bool, bool) Address = 0x117e77b33 (filename not found) [in UE4Editor-UnrealEd.dylib]
FKismetEditorUtilities::RecompileBlueprintBytecode(UBlueprint*, TArray<UObject*, FDefaultAllocator>*, bool) Address = 0x117e1f58d (filename not found) [in UE4Editor-UnrealEd.dylib]
FBlueprintCompileReinstancer::ReinstanceObjects(bool) Address = 0x117e1c779 (filename not found) [in UE4Editor-UnrealEd.dylib]
FKismetEditorUtilities::CompileBlueprint(UBlueprint*, bool, bool, bool, FCompilerResultsLog*, bool, bool) Address = 0x117e18064 (filename not found) [in UE4Editor-UnrealEd.dylib]
FBlueprintEditor::Compile() Address = 0x11ccd2a7f (filename not found) [in UE4Editor-Kismet.dylib]
TBaseSPMethodDelegateInstance<false, FBlueprintEditor, (ESPMode)0, TTypeWrapper<void> ()>::Execute() const Address = 0x11cdee91b (filename not found) [in UE4Editor-Kismet.dylib]
TBaseSPMethodDelegateInstance<false, FBlueprintEditor, (ESPMode)0, void ()>::ExecuteIfSafe() const Address = 0x11cdee9bb (filename not found) [in UE4Editor-Kismet.dylib]
FUICommandList::ExecuteAction(TSharedRef<FUICommandInfo const, (ESPMode)0>) const Address = 0x1161e9a4d (filename not found) [in UE4Editor-Slate.dylib]
SToolBarButtonBlock::OnClicked() Address = 0x1163411de (filename not found) [in UE4Editor-Slate.dylib]
TBaseSPMethodDelegateInstance<false, SToolBarButtonBlock, (ESPMode)0, FReply ()>::Execute() const Address = 0x1163f46a1 (filename not found) [in UE4Editor-Slate.dylib]
SButton::OnMouseButtonUp(FGeometry const&, FPointerEvent const&) Address = 0x116439045 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::RoutePointerUpEvent(FWidgetPath&, FPointerEvent&) Address = 0x1161bad9f (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent&) Address = 0x11616a9e4 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::OnMouseUp(EMouseButtons::Type, FVector2D) Address = 0x1161c3cbe (filename not found) [in UE4Editor-Slate.dylib]
FMacApplication::ProcessEvent(FDeferredMacEvent const&) Address = 0x10f44aada (filename not found) [in UE4Editor-Core.dylib]
FMacApplication::ProcessDeferredEvents(float) Address = 0x10f44a72f (filename not found) [in UE4Editor-Core.dylib]
FSlateApplication::TickPlatform(float) Address = 0x11618c595 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::Tick() Address = 0x11618bb68 (filename not found) [in UE4Editor-Slate.dylib]
FEngineLoop::Tick() Address = 0x10f207475 (filename not found) [in UE4Editor]
GuardedMain(wchar_t const*) Address = 0x10f20e5cf (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0x10f21ef2c (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0x10f443776 (filename not found) [in UE4Editor-Core.dylib]
Unknown() Address = 0x7fff9bda8d64 (filename not found) [in Foundation]
_pthread_body Address = 0x7fff92ffa99d (filename not found) [in libsystem_pthread.dylib]
_pthread_body Address = 0x7fff92ffa91a (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fff92ff8351 (filename not found) [in libsystem_pthread.dylib]