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:
2602 TexDataInfos[WeightmapIdx] = GetTextureDataInfo(Component->WeightmapTextures[WeightmapIdx]);
2603 }
2604
2605 LayerDataPtrs.Reset(); // Pointers to all layers' data
2606 LayerDataPtrs.AddUninitialized(Component->WeightmapLayerAllocations.Num());
2607 LayerNoWeightBlends.Reset(); // NoWeightBlend flags
2608 LayerNoWeightBlends.AddUninitialized(Component->WeightmapLayerAllocations.Num());
2609 LayerEditDataAllZero.Reset(); // Whether the data we are editing for this layer is all zero
2610 LayerEditDataAllZero.AddUninitialized(Component->WeightmapLayerAllocations.Num());
2611
2612 for (int32 LayerIdx = 0; LayerIdx < Component->WeightmapLayerAllocations.Num(); LayerIdx++)
2613 {
2614 FWeightmapLayerAllocationInfo& Allocation = Component->WeightmapLayerAllocations[LayerIdx];
2615 LayerDataPtrs[LayerIdx] = (uint8*)TexDataInfos[Allocation.WeightmapTextureIndex]->GetMipData(0) + ChannelOffsets[Allocation.WeightmapTextureChannel];
2616 ***** LayerNoWeightBlends[LayerIdx] = Allocation.LayerInfo->bNoWeightBlend;
2617 LayerEditDataAllZero[LayerIdx] = true;
2618 }
2619
2620 // Find the texture data corresponding to this vertex
2621 const int32 TexSize = (SubsectionSizeQuads+1) * ComponentNumSubsections;
2622
2623 // Find coordinates of box that lies inside component
2624 const int32 ComponentX1 = FMath::Clamp<int32>(X1-ComponentIndexX*ComponentSizeQuads, 0, ComponentSizeQuads);
2625 const int32 ComponentY1 = FMath::Clamp<int32>(Y1-ComponentIndexY*ComponentSizeQuads, 0, ComponentSizeQuads);
2626 const int32 ComponentX2 = FMath::Clamp<int32>(X2-ComponentIndexX*ComponentSizeQuads, 0, ComponentSizeQuads);
2627 const int32 ComponentY2 = FMath::Clamp<int32>(Y2-ComponentIndexY*ComponentSizeQuads, 0, ComponentSizeQuads);
2628
2629 // Find subsection range for this box
2630 const int32 SubIndexX1 = FMath::Clamp<int32>((ComponentX1-1) / SubsectionSizeQuads, 0, ComponentNumSubsections-1); // -1 because we need to pick up vertices shared between subsections
2631 const int32 SubIndexY1 = FMath::Clamp<int32>((ComponentY1-1) / SubsectionSizeQuads, 0, ComponentNumSubsections-1);
Most recent user affected CL: 3106830
Logs:
[Link Removed]
[Link Removed]
CrashReporter User Descriptions:
Load QA-Landscape
Open the landscape editor
go to the paint mode
Press the "find in content browser" button next to layer 3
Delete the asset for layer 3 in the content browser
Select "Force Delete" when it says that it's still in use
(this appears to work)
Attempt to paint layer 2 on the landscape
crash
UE4Editor_Landscape!FLandscapeEditDataInterface::SetAlphaData() [landscapeeditinterface.cpp:2617] UE4Editor_LandscapeEditor!FAlphamapAccessor<1,0>::SetData() [landscapeedmodetools.h:956] UE4Editor_LandscapeEditor!FLandscapeToolStrokePaint::Apply() [landscapeedmodepainttools.cpp:252] UE4Editor_LandscapeEditor!FLandscapeToolBase<FLandscapeToolStrokePaint>::BeginTool() [landscapeedmodetools.h:1325] UE4Editor_LandscapeEditor!FEdModeLandscape::InputKey() [landscapeedmode.cpp:1262] UE4Editor_UnrealEd!FEditorModeTools::InputKey() [editormodemanager.cpp:714] UE4Editor_UnrealEd!FEditorViewportClient::InputKey() [editorviewportclient.cpp:2202] UE4Editor_UnrealEd!FLevelEditorViewportClient::InputKey() [leveleditorviewport.cpp:2468] UE4Editor_Engine!FSceneViewport::OnMouseButtonDown() [sceneviewport.cpp:402] UE4Editor_Slate!SViewport::OnMouseButtonDown() [sviewport.cpp:176] UE4Editor_Slate!<lambda_7097b900f0e4be30d80fb18f98c51ea0>::operator() [slateapplication.cpp:4810] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_7097b900f0e4be30d80fb18f98c51ea0> >() [slateapplication.cpp:215] UE4Editor_Slate!FSlateApplication::RoutePointerDownEvent() [slateapplication.cpp:4799] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDownEvent() [slateapplication.cpp:4757] UE4Editor_Slate!FSlateApplication::OnMouseDown() [slateapplication.cpp:4691] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1592] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:1930] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:747] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:669] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() 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!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-35709 in the post.