This is a common crash affecting users in 4.16, and has occurred since at least 4.14. Over 200 unique users have been affected, though they have provided little information.
User Descriptions
Source Context
1982 // See if the deleted layer is a NoWeightBlend layer - if not, we don't have to worry about normalization 1983 const bool bFromLayerIsNoWeightBlend = (FromLayerInfo && FromLayerInfo->bNoWeightBlend); 1984 const bool bToLayerIsNoWeightBlend = (ToLayerInfo && ToLayerInfo->bNoWeightBlend); 1985 1986 const bool bRequireNormalization = (bFromLayerIsNoWeightBlend != bToLayerIsNoWeightBlend); 1987 checkf(!bRequireNormalization, TEXT("It is not yet supported to replace a layer with another whose bNoWeightBlend setting does not match")) 1988 1989 ***** if (bMerging) 1990 { 1991 FWeightmapLayerAllocationInfo& ToLayerAllocation = WeightmapLayerAllocations[ToLayerIdx]; 1992 1993 // Lock data for all the weightmaps 1994 FLandscapeTextureDataInfo* FromTexDataInfo = LandscapeEdit.GetTextureDataInfo(WeightmapTextures[FromLayerAllocation.WeightmapTextureIndex]); 1995 FLandscapeTextureDataInfo* ToTexDataInfo = LandscapeEdit.GetTextureDataInfo(WeightmapTextures[ToLayerAllocation.WeightmapTextureIndex]); 1996 1997 check(FromTexDataInfo->GetMipSizeX(0) == FromTexDataInfo->GetMipSizeY(0)); 1998 check(ToTexDataInfo->GetMipSizeX(0) == ToTexDataInfo->GetMipSizeY(0)); 1999 check(FromTexDataInfo->GetMipSizeX(0) == ToTexDataInfo->GetMipSizeX(0)); 2000 const int32 MipSize = FromTexDataInfo->GetMipSizeX(0); 2001 2002 uint8* const SrcTextureData = (uint8*)FromTexDataInfo->GetMipData(0) + ChannelOffsets[FromLayerAllocation.WeightmapTextureChannel]; 2003 uint8* const DestTextureData = (uint8*)ToTexDataInfo->GetMipData(0) + ChannelOffsets[ToLayerAllocation.WeightmapTextureChannel];
repro steps currently unknown (but probably replacing a layer with another whose bNoWeightBlend setting does not match)
Assertion failed: !bRequireNormalization [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Landscape\Private\LandscapeEditInterface.cpp] [Line: 1988] It is not yet supported to replace a layer with another whose bNoWeightBlend setting does not match UE4Editor_Landscape!ULandscapeComponent::ReplaceLayer() [landscapeeditinterface.cpp:1990] UE4Editor_Landscape!FLandscapeEditDataInterface::ReplaceLayer() [landscapeeditinterface.cpp:2112] UE4Editor_Landscape!ULandscapeInfo::ReplaceLayer() [landscapeedit.cpp:3154] UE4Editor_LandscapeEditor!FLandscapeEditorCustomNodeBuilder_TargetLayers::OnTargetLayerSetObject() [landscapeeditordetailcustomization_targetlayers.cpp:1116] UE4Editor_LandscapeEditor!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1027] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SObjectPropertyEntryBox,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SObjectPropertyEntryBox,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_PropertyEditor!SPropertyEditorAsset::SetValue() [spropertyeditorasset.cpp:610] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorAsset,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorAsset,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_PropertyEditor!SPropertyMenuAssetPicker::OnAssetSelected() [spropertymenuassetpicker.cpp:249] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyMenuAssetPicker,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyMenuAssetPicker,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ContentBrowser!SAssetView::AssetSelectionChanged() [sassetview.cpp:3620] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl() [delegateinstancesimpl.h:434] UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0>,enum ESelectInfo::Type>::ExecuteIfBound() [delegatesignatureimpl.inl:624] UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_SignalSelectionChanged() [slistview.h:735] UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonUp() [stablerow.h:476] UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() [slateapplication.cpp:5049] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [slateapplication.cpp:239] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5038] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5515] UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5495] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1704] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058] 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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