Description

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred.

Source Context

 742       FBoxSphereBounds UModelComponent::CalcBounds(const FTransform& LocalToWorld) const
  743       {
  744       	if(Model)
  745       	{
  746       		FBox	BoundingBox(ForceInit);
  747       		for(int32 NodeIndex = 0;NodeIndex < Nodes.Num();NodeIndex++)
  748       		{
  749 ***** 			FBspNode& Node = Model->Nodes[Nodes[NodeIndex]];
  750       			for(int32 VertexIndex = 0;VertexIndex < Node.NumVertices;VertexIndex++)
  751       			{
  752       				BoundingBox += Model->Points[Model->Verts[Node.iVertPool + VertexIndex].pVertex];
  753       			}
  754       		}
  755       		return FBoxSphereBounds(BoundingBox.TransformBy(LocalToWorld));
  756       	}
Steps to Reproduce

repro steps currently unknown

Callstack
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build\++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 610] 
Array index out of bounds: 4801 from an array of size 4796

UE4Editor_Engine!UModelComponent::CalcBounds() [modelrender.cpp:750]
UE4Editor_Engine!USceneComponent::UpdateBounds() [scenecomponent.cpp:1104]
UE4Editor_Engine!USceneComponent::PropagateTransformUpdate() [scenecomponent.cpp:695]
UE4Editor_Engine!USceneComponent::UpdateComponentToWorldWithParent() [scenecomponent.cpp:557]
UE4Editor_Engine!USceneComponent::UpdateComponentToWorld() [scenecomponent.h:862]
UE4Editor_Engine!UActorComponent::OnRegister() [actorcomponent.cpp:718]
UE4Editor_Engine!USceneComponent::OnRegister() [scenecomponent.cpp:587]
UE4Editor_Engine!UPrimitiveComponent::OnRegister() [primitivecomponent.cpp:466]
UE4Editor_Engine!UActorComponent::ExecuteRegisterEvents() [actorcomponent.cpp:1238]
UE4Editor_Engine!UActorComponent::RegisterComponentWithWorld() [actorcomponent.cpp:978]
UE4Editor_Engine!ULevel::UpdateModelComponents() [level.cpp:1304]
UE4Editor_Engine!ULevel::PostEditUndo() [level.cpp:1365]
UE4Editor_UnrealEd!FTransaction::Apply() [editortransaction.cpp:506]
UE4Editor_UnrealEd!UTransBuffer::Undo() [editortransaction.cpp:891]
UE4Editor_UnrealEd!UEditorEngine::Exec_Transaction() [editorserver.cpp:5046]
UE4Editor_UnrealEd!UEditorEngine::Exec() [editorserver.cpp:5493]
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [unrealedsrv.cpp:672]
UE4Editor_MainFrame!FMainFrameActionCallbacks::ExecuteExecCommand() [mainframeactions.cpp:1014]
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:212]
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:4845]
UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4744]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1560]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2171]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:888]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [windowsapplication.cpp:725]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [windowsplatformapplicationmisc.cpp:129]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3220]
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()

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Unresolved
ComponentTools - BSP
Affects Versions4.184.19
CreatedNov 10, 2017
UpdatedFeb 1, 2019