UEFN Update Crash at start when loading shaders

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Summary

The uefn new version is crashing when trying to open my maps, blank maps and templates opens. Its standard Islands, we are working for months, 2 of 3 are already published…

I’ve noticed that if i turn on (World Partition > Enable loading in Editor) i can open the island, but as soos as i try to load the content it crashes.

Steps to Reproduce

It happens everytime I try to open my projects. They were running fine yesterday before the uefn update.
Open the YouTycoon prject
UEFN will crash before loading the map

Expected Result

Crash inta when trying to open YouTycoon, MMTycoon, LevelandProps projects

Observed Result

LoginId:97b16cac40f9bfc7294ce39b888fcd3b
EpicAccountId:b7f74ce86f8c41b08f6f3eb4fcef8de3

Fatal error: [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\RHI\Private\PipelineStateCache.cpp] [Line: 411]
Shader compilation failures are Fatal.

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

Platform(s)

PC

well, i found out how to open UEFN without this shader crash!!!

1- reinstal UEFN
2- reboot windows using this clean startup
3- voilá, worked for me.