UE4 crashes when I try to make a sequence!

Hi,
When I try to make a sequence UE4 crashes with this message:

MachineId:CE91BF094B75D6D245D8B5890129D623
EpicAccountId:a551e3317b5b4161989d5f5a05fe2335

Unknown exception - code 00000001 (first/second chance not available)

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355]
UE4Editor_D3D11RHI!FD3D11DynamicRHI::~FD3D11DynamicRHI() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\windows\d3d11rhi\private\d3d11device.cpp:208]
UE4Editor_D3D11RHI!FD3D11DynamicRHI::`vector deleting destructor’()
UE4Editor_RHI!RHIExit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\rhi\private\dynamicrhi.cpp:75]
UE4Editor!FEngineLoop::Exit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2143]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:153]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

Is someone can help me?

Hi elimac -

Thank you for your report. We are looking into your crash now. If you could can you share some information about the project that you are experiencing this crash in? Does the crash reoccur in a blank project? Are you using any GLobal Illumination settings in the Project, or setting an console variables?

Let us know -

Eric Ketchum

Hi Eric,
Thanks for your answer. I’ve found an answer before. I’ve deleted the folders Saved, Config and Intermediate, and I’ve restarted my project.
That’s fixed my problem