This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below.
Error message:
Access violation - code c0000005 (first/second chance not available)
Source Context:
452 Records[i].Restore(this);
453 }
454 }
455
456 // An Actor's components must always get its PostEditUndo before the owning Actor so do a quick sort
457 ChangedObjects.KeySort([](UObject& A, UObject& B)
458 {
459 UActorComponent* BAsComponent = Cast<UActorComponent>(&B);
460 return (BAsComponent ? (BAsComponent->GetOwner() != &A) : true);
461 });
462
463 TArray<ULevel*> LevelsToCommitModelSurface;
464 NumModelsModified = 0;// Count the number of UModels that were changed.
465 for (auto ChangedObjectIt : ChangedObjects)
466 ***** {
467 UObject* ChangedObject = ChangedObjectIt.Key;
468 UModel* Model = Cast<UModel>(ChangedObject);
469 if (Model && Model->Nodes.Num())
470 {
471 FBSPOps::bspBuildBounds(Model);
472 ++NumModelsModified;
473 }
474
475 if (UModelComponent* ModelComponent = Cast<UModelComponent>(ChangedObject))
476 {
477 ULevel* Level = ModelComponent->GetTypedOuter<ULevel>();
478 check(Level);
479 LevelsToCommitModelSurface.AddUnique(Level);
480 }
481
Most recent user affected CL: 3142249
Logs:
[Link Removed]
[Link Removed]
[Link Removed]
CrashReporter User Descriptions:
Result: Editor crashes on undo
UE4Editor_UnrealEd!FTransaction::Apply() [editortransaction.cpp:467] UE4Editor_UnrealEd!UTransBuffer::Undo() [editortransaction.cpp:855] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:317] UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl() [delegateinstancesimpl.h:423] UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:211] UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:155] UE4Editor_UnrealEd!FBaseToolkit::ProcessCommandBindings() [basetoolkit.cpp:77] UE4Editor_UnrealEd!SStandaloneAssetEditorToolkitHost::OnKeyDown() [sstandaloneasseteditortoolkithost.cpp:335] UE4Editor_Slate!<lambda_2afcd964c763e269e2d1a63f3a72f846>::operator() [slateapplication.cpp:4517] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_2afcd964c763e269e2d1a63f3a72f846> >() [slateapplication.cpp:215] UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_2afcd964c763e269e2d1a63f3a72f846>,FKeyEvent>() [slateapplication.cpp:197] UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4515] UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4430] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1419] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:1930] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:747] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:669] user32!<Unknown> user32!<Unknown> UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:905] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:2788] UE4Editor!GuardedMain() [launch.cpp:156] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:126] UE4Editor!WinMain() [launchwindows.cpp:202] UE4Editor!__scrt_common_main_seh() [exe_common.inl:264] kernel32!<Unknown> ntdll!<Unknown>
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-37266 in the post.