Summary
My UEFN project is currently bricked and crashes on startup every time.
This started after I imported 27 .uasset files directly into the project folder through Windows File Explorer, accepted the “trust authors” prompt in UEFN, checked in the revision through Lore, closed UEFN, and then attempted to reopen the project.
The only meaningful change in that checked-in revision was the imported assets:
- 3 Scene Graph entities
- 2 static meshes
- 20 textures
- 2 materials
Deleting the local project folder and resyncing fresh did not resolve the issue. I also attempted manual recovery through PowerShell using the Lore CLI and tried removing the imported assets from disk, but the project still does not open.
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
Unreal Revision Control
Steps to Reproduce
- Open a UEFN project using Lore / UEFN revision control.
- Copy a folder of .uasset files directly into the local project directory using Windows File Explorer.
- In UEFN, accept the prompt to trust the authors.
- Check in the imported assets through Lore.
- Close UEFN.
- Reopen the same project.
- Observe that the project crashes on startup.
- Delete the local project folder and resync the project fresh.
- Attempt to open the project again.
Expected Result
The project should reopen normally after the .uasset import and check-in.
If an imported asset is invalid, unsupported, or incompatible, UEFN should provide a recoverable validation error, allow the bad assets to be removed, or allow the project to open without loading the bad content.
A fresh delete/resync should restore a usable local project state or provide a clear supported recovery path.
Observed Result
The project crashes on startup every time.
Fortnite Crash Reporter appears with:
“An Unreal process has crashed: UE-FortniteGame”
The crash summary repeatedly references UnrealEditorFortnite / UnrealEditorFortnite_Engine_Win64_Shipping.
Deleting the local project folder and resyncing fresh does not fix the issue. Manual Lore CLI rollback attempts and manual removal of the freshly imported assets from disk have not restored access. The project is still inaccessible through UEFN.
Platform(s)
PC / Windows
UEFN
Lore / UEFN revision control
Additional Notes
This is a production blocker.
The issue appears tied to a checked-in asset import revision. Once the bad state was checked in, normal local deletion and resync did not recover the project.
Please escalate to the UEFN/Lore engineering or support team. I need a supported way to remove, bypass, or repair the bad checked-in asset revision without being able to open the project in UEFN.
Attached:
- Crash Reporter screenshot
- Incident report PDF