Not sure if this is intentional or not, but when Global Default Server Game Mode is set to None in Project Settings, the project will fail to cook content.
LogPlayLevel:Display: UE4Editor-Cmd: [2014.04.12-22.45.32:645][ 0]LogInit:Display: LogPackageName:Error: DoesPackageExist: DoesPackageExist FAILED: 'None' is not a standard unreal filename or a long path name. Reason: Path should start with a '/'
I just had the same problem. Reading logfile cook.txt and the realtime output log in editor when packaging… I have no idea how Apoc (original poster) managed to discover that this had anything to do with the Global Default Server Game Mode setting but changing it from None to a game mode fixed it. It now packages succesfully.
I have a C++ FPS template and the builds/packaging started failing after I imported the community driven VR template and changed my gamemode, playercontroller, character…etc to those specific Blueprint assets.
As said below, I have no idea how you made the connection between this error and the Global Default Server Game Mode setting, but changing this setting fixed the problem for me too. Thanks for sharing!
For those like me which didn’t see how to set the “Global Default Server GameMode”.
There’s a tiny dropdown arrow below “Default Modes” in Project settings.
Many thanks for finding the solution to this issue. Really frustrating nasty problem since there is no really indicator in the output log and cook log of what went wrong.
I’m certain there are even more people out there who struggle with this issue.