Summary
UEFN platform cook fails repeatedly with invalid_results after updating a large, detailed Japanese house map. Map Check warnings (non-streaming actors referencing streaming actors) were fully resolved (0 errors, 0 warnings), and a corrupted orphaned uasset in ExternalActors was manually removed, but the cook still fails with the same error.
Please select what you are reporting on:
Creative
What Type of Bug are you experiencing?
Assets
Steps to Reproduce
- Open the project and start a session
- Platform cook fails with: “Failed to cook server/client request” + invalid_results
- Confirmed Map Check shows 0 errors/0 warnings
- Confirmed a corrupted orphaned uasset file in ExternalActors was found and removed
- Cook still fails with the same invalid_results error after removal
Expected Result
Session loads successfully after platform cook completes
Observed Result
Platform cook fails repeatedly with invalid_results, session cannot start
Platform(s)
windows
Additional Notes
Windows Fortnite build version 42.10. Project is a large, detailed custom map with many custom devices/props. Happy to provide the CookJobId or additional logs if needed.
