This is a common crash affecting users in 4.16. It appears to be a continuation of [Link Removed]. Users have not provided additional information about this crash.
Source Context
/** Accessors */ 63 FPreviewScene& GetPreviewScene(); 64 bool GetDrawElement(EDrawElements Element) const; 65 void ToggleDrawElement(EDrawElements Element); 66 FColor GetPreviewBackgroundColor() const; 67 UStaticMeshComponent* GetFloorComponent(); 68 FEditorCommonDrawHelper& GetDrawHelper(); 69 float& GetWireSphereRadius(); 70 71 ***** FCascade* GetCascade(){ return CascadePtr.IsValid() ? CascadePtr.Pin().Get() : nullptr; } 72 private: 73 /** Pointer back to the ParticleSystem editor tool that owns us */ 74 TWeakPtr<FCascade> CascadePtr; 75 76 /** Preview mesh */ 77 UStaticMeshComponent* FloorComponent; 78 79 /** Camera potition/rotation */ 80 FRotator PreviewAngle; 81 float PreviewDistance; 82 83 /** If true, will take screenshot for thumbnail on next draw call */ 84 float bCaptureScreenShot; 85 86 /** User input state info */
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_Cascade!FCascadeEdPreviewViewportClient::GetCascade() [cascadepreviewviewportclient.h:72] UE4Editor_Cascade!FCascade::OnComponentActivationChange() [cascade.cpp:209] UE4Editor_Cascade!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1027] UE4Editor_Engine!TBaseMulticastDelegate<void,UParticleSystemComponent * __ptr64,bool>::Broadcast() [delegatesignatureimpl.inl:937] UE4Editor_Engine!UParticleSystemComponent::ResetParticles() [particlecomponents.cpp:5077] UE4Editor_Engine!UParticleSystemComponent::PreEditChange() [particlecomponents.cpp:4211] UE4Editor_Engine!UActorComponent::PreEditUndo() [actorcomponent.cpp:551] UE4Editor_UnrealEd!FTransaction::Apply() [editortransaction.cpp:443] UE4Editor_UnrealEd!UTransBuffer::Undo() [editortransaction.cpp:864] UE4Editor_UnrealEd!UEditorEngine::Exec_Transaction() [editorserver.cpp:5198] UE4Editor_UnrealEd!UEditorEngine::Exec() [editorserver.cpp:5645] UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [unrealedsrv.cpp:670] UE4Editor_MainFrame!FMainFrameActionCallbacks::ExecuteExecCommand() [mainframeactions.cpp:969] UE4Editor_MainFrame!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1027] UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:216] UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:160] UE4Editor_MainFrame!FMainFrameActionCallbacks::OnUnhandledKeyDownEvent() [mainframeactions.cpp:211] UE4Editor_MainFrame!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<FReply() [tuple.h:497] UE4Editor_MainFrame!TBaseStaticDelegateInstance<FReply __cdecl() [delegateinstancesimpl.h:958] UE4Editor_Slate!TBaseDelegate<FReply,FKeyEvent const & __ptr64>::Execute() [delegatesignatureimpl.inl:537] UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4641] UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4541] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1539] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058] UE4Editor!GuardedMain() [launch.cpp:166] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134] UE4Editor!WinMain() [launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [exe_common.inl:253] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47251 in the post.