I’ve found the error trace:
Fatal error: [File:D:\workspace\UE4-Camso\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 6592]
LoadPackageAsync failed to begin to load a package because the supplied package name was neither a valid long package name nor a filename of a map within a content folder: ‘’ or ‘/Corvette_Grille02/grille3C_editor’
KERNELBASE.dll!0x000000007E48A388
AutomationGame-Win64-Shipping.exe!FOutputDeviceWindowsError::Serialize()
AutomationGame-Win64-Shipping.exe!FOutputD
It must be due to compatibility issues with a mod of some sort. Will unsubscribing from it do the trick? If not, I’ll try clearing the cache.