This is a common crash affecting users in 4.15 and 4.16, affecting over 200 unique users so far.
User Descriptions
Source Context
5124 {
5125 // If the parent is deprecated, we cannot modify deprecation on this Blueprint
5126 ***** if(GetBlueprintObj()->ParentClass->HasAnyClassFlags(CLASS_Deprecated))
5127 {
5128 return false;
5129 }
5130
5131 return true;
5132 }
Create a Blueprintable AActor derived class AFoo in C++
Create a blueprint derived from Foo
Close the editor and delete AFoo
Recompile and restart the editor
Open Foo, say Ok when warned about the possibility of the engine crashing
Navigate to the Class Settings button
Crash/Ensure (depending on build)
Access violation - code c0000005 (first/second chance not available) UE4Editor_Kismet!FBlueprintGlobalOptionsDetails::CanDeprecateBlueprint() [blueprintdetailscustomization.cpp:5127] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<1,FBlueprintGlobalOptionsDetails,0,bool __cdecl() [delegateinstancesimpl.h:327] UE4Editor_SlateCore!TAttribute<bool>::Get() [attribute.h:137] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_Slate!SBox::OnPaint() [sbox.cpp:237] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_Slate!SSplitter::OnPaint() [ssplitter.cpp:168] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:86] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:86] UE4Editor_PropertyEditor!STableRow<TSharedPtr<IDetailTreeNode,0> >::OnPaint() [stablerow.h:240] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_Slate!STableViewBase::OnPaint() [stableviewbase.cpp:632] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:102] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_Slate!SBox::OnPaint() [sbox.cpp:237] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:86] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:86] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:102] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:46] UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:21] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776] UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:37] UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:776]
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