When you attempt to open a widget blueprint when you have hidden the animation and timeline panels, the editor will crash.
There is a workaround: Window->Reset Layout will allow you to open the blueprint again, but hiding the panels a second time still causes the crash.
Found in 4.10 Preview 4. Reproduced in 4.10 release binary, and Main CL 2758903.
This issue does not occur in 4.9.2 binary. This is a regression.
Crashreporter bugg related to this issue: [Link Removed]
Source Context:
665 666 // Configure all the widgets to be set to design time. 667 PreviewActor->SetDesignerFlags(GetCurrentDesignerFlags()); 668 669 // Store a reference to the preview actor. 670 PreviewWidgetPtr = PreviewActor; 671 } 672 673 if (CurrentAnimation.IsValid()) 674 { 675 CurrentAnimation->Initialize(PreviewActor); 676 } 677 678 OnWidgetPreviewUpdated.Broadcast(); 679 ***** Sequencer->UpdateRuntimeInstances(); 680 } 681 682 FGraphAppearanceInfo FWidgetBlueprintEditor::GetGraphAppearance(UEdGraph* InGraph) const 683 { 684 FGraphAppearanceInfo AppearanceInfo = FBlueprintEditor::GetGraphAppearance(InGraph); 685 686 if ( GetBlueprintObj()->IsA(UWidgetBlueprint::StaticClass()) ) 687 { 688 AppearanceInfo.CornerText = LOCTEXT("AppearanceCornerText", "WIDGET BLUEPRINT"); 689 } 690 691 return AppearanceInfo; 692 } 693 694 void FWidgetBlueprintEditor::ClearHoveredWidget()
1. Open the editor
2. Create a new widget blueprint
3. Open the widget blueprint
4. Hide the Animations and Timeline panels
5. Save the blueprint
6. Close and Re-open the Widget Blueprint
Result: Editor crashes.
Expected: Blueprint would open without issue.
Assertion failed: IsValid() [Link Removed] [Line: 739]
UE4Editor_UMGEditor!FWidgetBlueprintEditor::UpdatePreview() widgetblueprinteditor.cpp:680 UE4Editor_UMGEditor!FWidgetBlueprintEditor::InitWidgetBlueprintEditor() widgetblueprinteditor.cpp:86 UE4Editor_UMGEditor!FAssetTypeActions_WidgetBlueprint::OpenAssetEditor() assettypeactions_widgetblueprint.cpp:32 UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() asseteditormanager.cpp:311 UE4Editor_UMGEditor!FAssetTypeActions_Base::AssetsActivated() assettypeactions_base.h:41 UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() scontentbrowser.cpp:1757 UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl_variadics.inl:282 UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl() delegateinstancesimpl_variadics.inl:388 UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() sassetview.cpp:3292 UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl_variadics.inl:282 UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl() delegateinstancesimpl_variadics.inl:388 UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0> >::ExecuteIfBound() delegatesignatureimpl_variadics.inl:482 UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_OnItemDoubleClicked() slistview.h:689 UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonDoubleClick() stablerow.h:261 UE4Editor_Slate!<lambda_ab05c44bd3b63117ffdb05809cd69ce7>::operator() slateapplication.cpp:4609 UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_ab05c44bd3b63117ffdb05809cd69ce7> >() slateapplication.cpp:214 UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() slateapplication.cpp:4607 UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() slateapplication.cpp:4590 UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1346 UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:1709 UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:707 UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:629 user32!<Unknown> user32!<Unknown> UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:884 UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2391 UE4Editor!GuardedMain() launch.cpp:142 UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 UE4Editor!WinMain() launchwindows.cpp:200 UE4Editor!__scrt_common_main_seh() exe_common.inl:264 kernel32!<Unknown> ntdll!<Unknown>
Layout change causes insta-crash
Game keeps closing down when opening a widget
Crash after opening widget blueprints
Crashes when editing Widget Blueprints
Editor crashed when open a widget editor
Crash on trying to open Widget Blueprint
Editing Blueprint crashing UE4
Why does Unreal Engine 4.10 crash after opening my HUD file?
Head over to the existing Questions & Answers thread and let us know what's up.
| 0 |
| Component | UE - Editor - UI Systems |
|---|---|
| Affects Versions | 4.10, 4.11 |
| Target Fix | 4.11 |
| Fix Commit | 2771346 |
|---|---|
| Main Commit | 2800829 |
| Created | Nov 11, 2015 |
|---|---|
| Resolved | Nov 18, 2015 |
| Updated | Jun 8, 2016 |