I keep getting this error

Development Platform & Builds
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1

Fatal error: [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 345] SwapChain->ResizeBuffers(1,SizeX,SizeY,RenderTargetFormat,DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH) failed at D:\Build++UE4\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Viewport.cpp:235 with error DXGI_ERROR_INVALID_CALL, Size=688x92 Format=DXGI_FORMAT_R10G10B10A2_UNORM(0x00000018)

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:425]
UE4Editor_D3D11RHI!VerifyD3D11ResizeViewportResult() [d:\build++ue4\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:336]
UE4Editor_D3D11RHI!FD3D11Viewport::Resize() [d:\build++ue4\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:237]
UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHIResizeViewport() [d:\build++ue4\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:522]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::ConditionalResizeViewport() [d:\build++ue4\sync\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:383]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private() [d:\build++ue4\sync\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:1059]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\build++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1585]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\build++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1285]
UE4Editor_Slate!FSlateApplication::TickApplication() [d:\build++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1860]
UE4Editor_Slate!FSlateApplication::Tick() [d:\build++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1687]
UE4Editor!FEngineLoop::Tick() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3574]
UE4Editor!GuardedMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
UE4Editor!WinMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
kernel32
ntdll

2

What are you trying to do? It’s hard to know what is going on just by looking at the error trace.

It seems to have something to do with Windows rendering while resizing some window to 688x92 while using D3D from DirectX11, I think.

Do you have the latest DirectX installed? And do you have DirectX11 installed?

3

Everytime I press play to view what I’ve been working on it crashes or right after I press stop. I’m not sure what directx I have installed, where can I find it?

4

i am running the DirectX12