Crash is caused by incorrect cast to display ActorComponent in viewport (gizmo used to move it should not be present)
1. Create a C++ first person template project.
2. Press PIE from the default example map.
3. Eject from Pawn, and move the viewport camera, so that the Player Character Pawn Model and cube geometry is within view.
4. Select a piece of geometry in the map. (Cube meshes)
5. Select the First Person Pawn->Select Character Movement Component
6. Move the Transform Gizmo of the Character Movement Component in the viewport editor.
Result: Crash: See Call Stack for Full
Fatal error: [File:D:/UE4 MonteUE4Main/Engine/Source/Runtime/CoreUObject/Private/Templates/Casts.cpp] [Line: 10] Cast of CharacterMovementComponent /Game/FirstPersonCPP/Maps/UEDPIE_0_FirstPersonExampleMap.FirstPersonExampleMap:PersistentLevel.FirstPersonCharacter_C_0.CharMoveComp to SceneComponent failed
Expected: No Crash.
[Inline Frame] UE4Editor-CoreUObject.dll!CastLogError::__l11::<lambda_85a69443e79372a632c30a14da020d5f>::operator()() Line 10 at d:\ue4 monteue4main\engine\source\runtime\coreuobject\private\templates\casts.cpp(10) UE4Editor-CoreUObject.dll!CastLogError(const wchar_t * FromType, const wchar_t * ToType) Line 10 at d:\ue4 monteue4main\engine\source\runtime\coreuobject\private\templates\casts.cpp(10) [Inline Frame] UE4Editor-UnrealEd.dll!CastChecked(UObject *) Line 219 at d:\ue4 monteue4main\engine\source\runtime\coreuobject\public\templates\casts.h(219) UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::TrackingStopped() Line 2991 at d:\ue4 monteue4main\engine\source\editor\unrealed\private\leveleditorviewport.cpp(2991) UE4Editor-UnrealEd.dll!FMouseDeltaTracker::EndTracking(FEditorViewportClient * InViewportClient) Line 306 at d:\ue4 monteue4main\engine\source\editor\unrealed\private\mousedeltatracker.cpp(306) UE4Editor-UnrealEd.dll!FEditorViewportClient::StopTracking() Line 2766 at d:\ue4 monteue4main\engine\source\editor\unrealed\private\editorviewportclient.cpp(2766) UE4Editor-UnrealEd.dll!FEditorViewportClient::InputKey(FViewport * InViewport, int ControllerId, FKey Key, EInputEvent Event, float __formal, bool __formal) Line 2701 at d:\ue4 monteue4main\engine\source\editor\unrealed\private\editorviewportclient.cpp(2701) UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::InputKey(FViewport * InViewport, int ControllerId, FKey Key, EInputEvent Event, float AmountDepressed, bool bGamepad) Line 2694 at d:\ue4 monteue4main\engine\source\editor\unrealed\private\leveleditorviewport.cpp(2694) UE4Editor-LevelEditor.dll!FViewportClient::InputKey(const FInputKeyEventArgs & EventArgs) Line 789 at d:\ue4 monteue4main\engine\source\runtime\engine\public\unrealclient.h(789) UE4Editor-Engine.dll!FSceneViewport::OnMouseButtonUp(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent) Line 568 at d:\ue4 monteue4main\engine\source\runtime\engine\private\slate\sceneviewport.cpp(568) UE4Editor-Slate.dll!SViewport::OnMouseButtonUp(const FGeometry & MyGeometry, const FPointerEvent & MouseEvent) Line 213 at d:\ue4 monteue4main\engine\source\runtime\slate\private\widgets\sviewport.cpp(213) [Inline Frame] UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent::__l8::<lambda_6c1f6b862bcfb82ea6dcab28fbcc9463>::operator()(const FArrangedWidget &) Line 5647 at d:\ue4 monteue4main\engine\source\runtime\slate\private\framework\application\slateapplication.cpp(5647) UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_6c1f6b862bcfb82ea6dcab28fbcc9463> >(FSlateApplication * ThisApplication, FEventRouter::FToLeafmostPolicy RoutingPolicy, FPointerEvent EventCopy, const FSlateApplication::RoutePointerUpEvent::__l8::<lambda_6c1f6b862bcfb82ea6dcab28fbcc9463> & Lambda) Line 273 at d:\ue4 monteue4main\engine\source\runtime\slate\private\framework\application\slateapplication.cpp(273) UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent(const FWidgetPath & WidgetsUnderPointer, const FPointerEvent & PointerEvent) Line 5633 at d:\ue4 monteue4main\engine\source\runtime\slate\private\framework\application\slateapplication.cpp(5633) UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent(const FPointerEvent & MouseEvent) Line 6238 at d:\ue4 monteue4main\engine\source\runtime\slate\private\framework\application\slateapplication.cpp(6238) UE4Editor-Slate.dll!FSlateApplication::OnMouseUp(const EMouseButtons::Type Button, const FVector2D CursorPos) Line 6211 at d:\ue4 monteue4main\engine\source\runtime\slate\private\framework\application\slateapplication.cpp(6211) UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage(const FDeferredWindowsMessage & DeferredMessage) Line 1880 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp(1880) UE4Editor-ApplicationCore.dll!FWindowsApplication::DeferMessage(TSharedPtr<FWindowsWindow,0> & NativeWindow, HWND__ * InHWnd, unsigned int InMessage, unsigned __int64 InWParam, __int64 InLParam, int MouseX, int MouseY, unsigned int RawInputFlags) Line 2332 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp(2332) UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessMessage(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 1560 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp(1560) UE4Editor-ApplicationCore.dll!FWindowsApplication::AppWndProc(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 790 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp(790) [External Code] [Inline Frame] UE4Editor-ApplicationCore.dll!WinPumpMessages() Line 108 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp(108) UE4Editor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages(bool bFromMainLoop) Line 123 at d:\ue4 monteue4main\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp(123) UE4Editor.exe!FEngineLoop::Tick() Line 4173 at d:\ue4 monteue4main\engine\source\runtime\launch\private\launchengineloop.cpp(4173) [Inline Frame] UE4Editor.exe!EngineTick() Line 62 at d:\ue4 monteue4main\engine\source\runtime\launch\private\launch.cpp(62) UE4Editor.exe!GuardedMain(const wchar_t * CmdLine, HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, int nCmdShow) Line 173 at d:\ue4 monteue4main\engine\source\runtime\launch\private\launch.cpp(173) UE4Editor.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow) Line 265 at d:\ue4 monteue4main\engine\source\runtime\launch\private\windows\launchwindows.cpp(265) [External Code]
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