UEFN crashes when loading a project

Summary

This error has been occurring since v38.00. Some small projects can be opened. But larger projects load to, for example, 95% and then UEFN crashes and shows an error. I can’t open my project. Please help. It’s months of work and I don’t want to lose it. This happens to multiple projects, especially larger ones.

Tried:

  • Clearing the cache of both the project and Epic Launcher
  • Updating the nvidia drivers
  • Verifying files in Epic Launcher

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

  1. Identify the error
  2. Fix
  3. Prevent UEFN from crashing
  4. Load the project

Expected Result

Load project

Observed Result

UEFN crashes when loading a project

Platform(s)

PC

Upload an image


Hi Vangork, Thanks for the report.

A crash involving ‘High Resolution Textures’ pack appeared in v38.00 - Do you have the pack installed? If not - Does adding the pack resolve this crash?

I have this pack. It didn’t help.

1 Like

same issue, pls fix this ASAP, i can’t update my map because of this!!

1 Like

I got it. The project loaded. The problem was in the Niagara asset. I moved Niagara out of the project and the map loaded. I have 6 Niagara effects here. These only differ in color, which tells me that the problem is not in Niagara itself, but that the file was corrupted during the upgrade. I recommend renaming the folders one by one to find the specific file that may be causing the crash.

1 Like

The status of FORT-1009883 changed to ‘Needs Triage’. We’ve confirmed the issue and it’s waiting to be assigned to someone to fix it.

1 Like

@Flak pls take vision of this bug, is unfixable on my map, i alredy tried eliminating all assets and didn’t work, the crash seems completly random, not depending on witch asset im using

same for me , crash when i launch memory calculation (when is loading the map on the server), impossible to find a solution, i can’t publish my map sine 38.00 update

1 Like

For the last tw here, could we get your UEFN logs?

Logs.zip (25.4 MB) i have the same exact problem, i send you the logs, it’s been 13 days i can’t start the session or launch memory without having uefn crash

@Rock_Studio We’re not seeing any crashes in your UEFN logs, could you send us your Fortnite logs?

@Flak so i just tried now to start the session after the new update and the error keeps showing, this is a screen of the error i got just right now, those are the logs i just took after the crash, lmk asap because i spend thousand of euro in this map and im working on it from more then 1 year, is very frusrating that i can’t pubblish it anymore from more then 2 weeks.
Here my UEFN logs and Fortnite logs

FortniteLogs.zip (7.8 MB)

LogsCrashNow.zip (20.0 MB)

@Flak pls let me know it’s been more then 16 days and i can’t start the map, i worked 1 year over it and i can’t even pubblish it because of this crash

Been happening to me too, stopped at 96% and crashes

Looks like the crash depends on verse, when i disable all my verse files the map don’t crash, looks like there is something in verse that is making the map crash, but i don’t know if is the real reason of the crash, what i did was create a blank project and import only my verse files into it, i was able to recreate the crash, even if the project had 0 assets, I hope i helped bi giving to you that information

Hi,

Please try deleting each verse file from your blank project, then recreate the crash.

Keep a list of the files you delete.

When the blank project stops crashing.

Then the last verse file to be deleted is possibly the faulty Verse file.

Upload the last Verse file that was deleted so that others can check and possibly find the problem.

Hi!
the problem is that the crash is very strange, basically what i did was disable all my verse files and activate them 1 by 1 to see wich one will make crash the map, i have a total of 28 verse files in my map, the first 21 files didn’t cause the crash, then the last 7 works all together so i turned them on all in once causing the map to crash again, so we will say: yes those 7 codes are the main reason of the map crash, but then! if after the crash, i remove the 7 codes and start the map again, the map will CRASH! this doens’t make any sense!, im really sad about this crash becasuse all my work is stopped for this, and i don’t know what to do really.
I leave you here the codes of the crash, thank you for the help!

RPG CODES CRASH.zip (46.6 KB)

@Flak pls don’t forget about me, is very important project and im very stressed because i can’t pubblish it without memory calculation, pls help me fix this bug

the bug got fixed with the new season, thank you anyways :3