Developer Notes

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Description
LogUnrealMath:Error: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead.
LogOutputDevice: === Handled error: ===
Ensure condition failed: false [File:d:\***\engine\source\runtime\core\public\math\UnrealMatrix.h] [Line: 266]
FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead.
Stack: 
UE4Editor-Core.dll!FWindowsPlatformStackWalk::StackWalkAndDump() [d:\***\engine\source\runtime\core\private\windows\windowsplatformstackwalk.cpp:175]
UE4Editor-Core.dll!FDebug::EnsureFailed() [d:\***\engine\source\runtime\core\private\misc\outputdevice.cpp:258]
UE4Editor-Core.dll!FDebug::OptionallyLogFormattedEnsureMessageReturningFalse() [d:\***\engine\source\runtime\core\private\misc\outputdevice.cpp:368]
UE4Editor-Renderer.dll!FMatrix::InverseFast() [d:\***\engine\source\runtime\core\public\math\unrealmatrix.h:266]
UE4Editor-Renderer.dll!FProjectedShadowInfo::SetupPerObjectProjection() [d:\***\engine\source\runtime\renderer\private\shadowsetup.cpp:497]
UE4Editor-Renderer.dll!FSceneRenderer::CreatePerObjectProjectedShadow() [d:\***\engine\source\runtime\renderer\private\shadowsetup.cpp:1575]
UE4Editor-Renderer.dll!FSceneRenderer::SetupInteractionShadows() [d:\***\engine\source\runtime\renderer\private\shadowsetup.cpp:1259]
UE4Editor-Renderer.dll!FDeferredShadingSceneRenderer::InitDynamicShadows() [d:\***\engine\source\runtime\renderer\private\shadowsetup.cpp:2533]
UE4Editor-Renderer.dll!FDeferredShadingSceneRenderer::InitViews() [d:\***\engine\source\runtime\renderer\private\scenevisibility.cpp:2186]
UE4Editor-Renderer.dll!FDeferredShadingSceneRenderer::Render() [d:\***\engine\source\runtime\renderer\private\deferredshadingrenderer.cpp:800]
UE4Editor-Renderer.dll!RenderViewFamily_RenderThread() [d:\***\engine\source\runtime\renderer\private\scenerendering.cpp:1573]
UE4Editor-Renderer.dll!TGraphTask<`FRendererModule::BeginRenderingViewFamily'::`23'::EURCMacro_FDrawSceneCommand>::ExecuteTask() [d:\***\engine\source\runtime\core\public\async\taskgraphinterfaces.h:779]
UE4Editor-Core.dll!FTaskThread::ProcessTasks() [d:\***\engine\source\runtime\core\private\async\taskgraph.cpp:539]
UE4Editor-Core.dll!FTaskThread::ProcessTasksUntilQuit() [d:\p***\engine\source\runtime\core\private\async\taskgraph.cpp:340]
UE4Editor-RenderCore.dll!RenderingThreadMain() [d:\***\engine\source\runtime\rendercore\private\renderingthread.cpp:310]
UE4Editor-RenderCore.dll!FRenderingThread::Run() [d:\***\engine\source\runtime\rendercore\private\renderingthread.cpp:411]
UE4Editor-Core.dll!FRunnableThreadWin::Run() [d:\***\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:74]
UE4Editor-Core.dll!FRunnableThreadWin::GuardedRun() [d:\***\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:31]
KERNEL32.DLL
ntdll.dll
ntdll.dll
LogUnrealMath:Error: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead.

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Won't Fix
ComponentUE - Rendering
Affects Versions4.9
CreatedNov 13, 2015
ResolvedFeb 14, 2017
UpdatedApr 27, 2018