Any idea what it could be? Just tried again and it immediately fails.
EDIT: I just tried also looking at the Front-End documentation and it doesn’t show too well how to do it within the editor (Using the Unreal Frontend Tool | Unreal Engine Documentation). It appears to only be documenting how to do it outside of the editor. The one within UE4 is pretty confusing at first glance. I’ll try the standalone front-end app but I want to figure out what is causing the Launch option to fail if this option ends up working.
UPDATED: I just checked the engine source folder for the UnrealFrontend.exe and it doesn’t exist under Engine/Binaries/Win64
Thanks!