Summary
Summary
Every replay recorded on my UEFN island gets stuck on the loading screen forever. After 10 minutes the client kills itself via the hang detector. Replays of other, smaller UEFN islands work fine on the same PC and the same build. My replays worked before the 42.40 update.
Island code: 3559-5880-8181 (live, version 40). The same issue happens on a private version.
Build: ++Fortnite+Release-42.40-CL-59343437, Windows
What Type of Bug are you experiencing?
Other
Steps to Reproduce
Play island 3559-5880-8181 for 1–2 minutes with replay recording on.
Return to the lobby → Career → Replays → play the replay.
Expected Result
The replay loads and I can use the replay camera.
Observed Result
The loading screen never goes away. The log shows Loading screen showing: Reason: World hasn’t begun play every 5 seconds. After 600 s: Failed to reach checkpoint: ‘LoadingScreen’ within alotted time of 600.00. Triggering hang detector. → crash.
Affects Versions
5.8
Platform(s)
Windows
For crash reports, include your callstack
The replay header only contains VerseURI=VKPlayMinimumRoot+VerseSocialSynergyFortnite+CreativeRoot+UEFNMetaData. The island’s own content bundle is never requested or mounted during playback, so the island level and assets are missing: LogLevelStream: Unable to load package(/589caf22-40bb-a80c-4910-61b319344b0a/GangLand) because it does not exist.
Around 40–50 of my custom Blueprint props fail to load: LogNetPackageMap: Error: AsyncPackageCallback: Package FAILED to load. Path: /589caf22-…/CustomProps/Prop_*_Grid.
The replay stream itself plays to the end (ReplayPlaybackComplete), but BP_ReplayPC_Athena_C and Playspace_GameState_C are never spawned and MatchState never changes. So the world never begins play.
For comparison: on another UEFN island (7835-3901-1999), the island bundle is also not loaded during playback (same missing level, CustomProps/Prop_Box FAILED). But there the replay PC and GameState arrive after about 3 seconds and the replay works. The difference seems to be the number of custom prop classes that cannot be loaded.
Additional Notes
Epic asks creators for a lot of promotion: trailers, fly-over footage for Epic’s Picks, thumbnails, social media clips. Replay Mode is the only proper in-game tool for cinematic footage. For many UEFN islands, especially larger ones with custom props or Scene Graph content (see also What Is Expected for Epic’s Picks Fly Over Footage?), it is broken right now. Creators are asked to market their islands while the official tool for it doesn’t work. That’s honestly frustrating and puts UEFN creators at a real disadvantage. Please look into this, or at least give us a workaround.