Cannot open SharedPCH.UnrealEd.Project.ValApi.Cpp20.h.pch

Development Programming & Scripting C++
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1

Out of nowhere, my project stopped compiling today. I tried rolling back to earlier commits, running Rider as admin, installed older versions of .NET, nothing works and I’m at my wit’s end…

0>#19 15/92: SharedPCH.UnrealEd.Project.ValApi.Cpp20.cpp @ 2s
0>ERROR: Task failed with exit code: 2
0>SharedPCH.UnrealEd.Project.ValApi.Cpp20.cpp"
0>c1xx: Error C1083 : Can't open file intermediate compiler: '"F:\Unreal Projects\Metroidvania\Intermediate\Build\Win64\x64\MetroidvaniaEditor\Development\UnrealEd\SharedPCH.UnrealEd.Project.ValApi.Cpp20.h.pch"': Invalid argument
0>Cache statistic: hit 0 of 0 (0 %), remote 0, read 0, write 0, total 0
0>ERROR: Error  : Build failed
0>Total time in XGE executor: 2.83 seconds
0>Total execution time: 7.55 seconds

And, indeed, the file is just… not there.

MetroidvaniaEditor\Development\UnrealEd on  HEAD (311f2d9) via C 
❯ ls -name       
SharedDefinitions.UnrealEd.Cpp20.h
SharedDefinitions.UnrealEd.Project.ValApi.Cpp20.h
SharedDefinitions.UnrealEd.RTTI.Cpp20.h
SharedPCH.UnrealEd.Cpp20.cpp
SharedPCH.UnrealEd.Cpp20.h
SharedPCH.UnrealEd.Cpp20.h.obj.rsp
SharedPCH.UnrealEd.Project.ValApi.Cpp20.cpp
SharedPCH.UnrealEd.Project.ValApi.Cpp20.h
SharedPCH.UnrealEd.Project.ValApi.Cpp20.h.dep.json
SharedPCH.UnrealEd.Project.ValApi.Cpp20.h.obj.rsp
SharedPCH.UnrealEd.Project.ValApi.Cpp20.h.sarif
SharedPCH.UnrealEd.RTTI.Cpp20.cpp
SharedPCH.UnrealEd.RTTI.Cpp20.h
SharedPCH.UnrealEd.RTTI.Cpp20.h.obj.rsp

All sorts of other files are, but not the .pch one

2

Seems it was Octobuild at fault. Uninstallin it makes the project compile just fine.