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

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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.

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

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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.

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@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?