Unreal Engine Crash When Dragging Mesh To The Viewport

General Feedback & Requests
1

Hi All:

I’m extremely new to Unreal Engine. This is actually my first time trying to use it. I’m not sure if I’m having some type of hardware issue, or if it’s software, or something I can even fix. I am running a hackintosh, so that might be part of the driving issue, but I don’t typically have other software issues.

When I try and drag any shape, for example Shape_Cube from the StarterContent to what I believe is called the viewport, I get an immediate crash. I can see the object move around when I drag it, but as soon as I let go of my mouse button it immediately crashes. I’ve tried with mannequins and other props as well, everything gives me the exact same crash (except the memory address is different). Another thing to note is that I tried it on 5.1 as well as 5.2, but same issue.

This happens on any of the templates, top down, 3d, even blank after I add the StarterContent.

One thing that is interesting though, I tried to download the Lyra example project. Once it was open, I was perfectly able to drag any mesh from the StarterContent to it. I was able to drag any of the mannequins as well.

This is the crash that I am getting:

Assertion failed: IsRunningCommandlet() [File:./Runtime/Engine/Private/LevelActor.cpp] [Line: 276]

FActorGUIDGenerator::FActorGUIDGenerator() Address = 0x1234909f7 (filename not found) [in UnrealEditor-Engine.dylib]
FActorSpawnUtils::MakeUniqueActorName(ULevel*, UClass const*, FName, bool) Address = 0x12340db5a (filename not found) [in UnrealEditor-Engine.dylib]
UWorld::SpawnActor(UClass*, UE::Math::TTransform<double> const*, FActorSpawnParameters const&) Address = 0x1234103fe (filename not found) [in UnrealEditor-Engine.dylib]
UActorFactory::SpawnActor(UObject*, ULevel*, UE::Math::TTransform<double> const&, FActorSpawnParameters const&) Address = 0x11d355853 (filename not found) [in UnrealEditor-UnrealEd.dylib]
UActorFactory::CreateActor(UObject*, ULevel*, UE::Math::TTransform<double> const&, FActorSpawnParameters const&) Address = 0x11d3549b1 (filename not found) [in UnrealEditor-UnrealEd.dylib]
PrivateAddActor(UObject*, UActorFactory*, bool, EObjectFlags, FName) Address = 0x11cb9733c (filename not found) [in UnrealEditor-UnrealEd.dylib]
FActorFactoryAssetProxy::AddActorForAsset(UObject*, bool, EObjectFlags, UActorFactory*, FName) Address = 0x11cb95b08 (filename not found) [in UnrealEditor-UnrealEd.dylib]
FLevelEditorViewportClient::TryPlacingActorFromObject(ULevel*, UObject*, bool, EObjectFlags, UActorFactory*, FName, FViewportCursorLocation const*) Address = 0x11d89d510 (filename not found) [in UnrealEditor-UnrealEd.dylib]
FLevelEditorViewportClient::DropObjectsOnActor(FViewportCursorLocation&, TArray<UObject*, TSizedDefaultAllocator<32>> const&, AActor*, int, EObjectFlags, TArray<AActor*, TSizedDefaultAllocator<32>>&, bool, bool, UActorFactory*) Address = 0x11d8a23e1 (filename not found) [in UnrealEditor-UnrealEd.dylib]
FLevelEditorViewportClient::DropObjectsAtCoordinates(int, int, TArray<UObject*, TSizedDefaultAllocator<32>> const&, TArray<AActor*, TSizedDefaultAllocator<32>>&, bool, bool, bool, UActorFactory*) Address = 0x11d8a5ca0 (filename not found) [in UnrealEditor-UnrealEd.dylib]
SLevelViewport::HandlePlaceDraggedObjects(FGeometry const&, FDragDropEvent const&, bool) Address = 0x133fb4eb1 (filename not found) [in UnrealEditor-LevelEditor.dylib]
SLevelViewport::OnDrop(FGeometry const&, FDragDropEvent const&) Address = 0x133fb76e9 (filename not found) [in UnrealEditor-LevelEditor.dylib]
FSlateApplication::RoutePointerUpEvent(FWidgetPath const&, FPointerEvent const&) Address = 0x11407da35 (filename not found) [in UnrealEditor-Slate.dylib]
FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent const&) Address = 0x114040166 (filename not found) [in UnrealEditor-Slate.dylib]
FSlateApplication::OnMouseUp(EMouseButtons::Type, UE::Math::TVector2<double>) Address = 0x114085c03 (filename not found) [in UnrealEditor-Slate.dylib]
FMacApplication::ProcessMouseUpEvent(FDeferredMacEvent const&, TSharedPtr<FMacWindow, (ESPMode)1>) Address = 0x10e0f421a (filename not found) [in UnrealEditor-ApplicationCore.dylib]
FMacApplication::ProcessEvent(FDeferredMacEvent const&) Address = 0x10e0ee040 (filename not found) [in UnrealEditor-ApplicationCore.dylib]
FMacApplication::ProcessDeferredEvents(float) Address = 0x10e0edd9f (filename not found) [in UnrealEditor-ApplicationCore.dylib]
FSlateApplication::TickPlatform(float) Address = 0x11405969b (filename not found) [in UnrealEditor-Slate.dylib]
FSlateApplication::Tick(ESlateTickType) Address = 0x114058c76 (filename not found) [in UnrealEditor-Slate.dylib]
FEngineLoop::Tick() Address = 0x10d86c336 (filename not found) [in UnrealEditor]
GuardedMain(char16_t const*) Address = 0x10d878af8 (filename not found) [in UnrealEditor]
-[UEAppDelegate runGameThread:] Address = 0x10d894e85 (filename not found) [in UnrealEditor]
-[FCocoaGameThread main] Address = 0x111333e0c (filename not found) [in UnrealEditor-Core.dylib]
Unknown() Address = 0x7ff8124567b3 (filename not found) [in Foundation]
_pthread_start Address = 0x7ff8114f81d3 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7ff8114f3bd3 (filename not found) [in libsystem_pthread.dylib]

Hopefully someone can help. Thank you very much everyone, I hope you all have a nice day.

2

“So as it turns out, MacAddress is literally referring to your networks on your PC. 1. I had a ton of disconnected virtual network adapters piled up, so I disabled them all, and now I can place actors in my levels without it crashing.” it helped me

3

Hi BouvToTheMaxi:

I think you replied to the wrong post. I tried turning off all my network settings and it didn’t help me either. I do appreciate it though.

I recorded a short video of it crashing for anyone that wants to see what I’m talking about. You can see it doesn’t crash when I place things in the Lyra example, but as soon as I do it in a test level I created, it crashes with the above error.

Thanks again all.

4

Bump.