[26.20 - Fatal error]: UEFN crash when try to load island project

Reference ID

UECC-Windows-CC752BB44678EEF8450255BDF23DA88E

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Unreal Revision Control

Summary

Fatal error: [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 949]
Rendering thread exception:
Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000038

0x00007ff62651d652 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff6265f6c0e UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff6264f0bd4 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff6264f4a57 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff626811427 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff62680e211 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff88461257d KERNEL32.DLL!UnknownFunction

[2023.10.02-10.10.49:081][982]LogHotfixManager: Applying hotfix DefaultEngine.ini
[2023.10.02-10.10.49:082][982]LogHotfixManager: Updating config from DefaultEngine.ini took 0.000006 seconds and reloaded 0 objects
[2023.10.02-10.10.49:082][982]LogHotfixManager: Applying hotfix DefaultGame.ini
[2023.10.02-10.10.49:082][982]LogHotfixManager: Updating config from DefaultGame.ini took 0.000273 seconds and reloaded 1 objects
[2023.10.02-10.10.49:083][982]LogHotfixManager: Applying hotfix DefaultRuntimeOptions.ini
[2023.10.02-10.10.49:083][982]LogHotfixManager: Updating config from DefaultRuntimeOptions.ini took 0.000000 seconds and reloaded 0 objects
[2023.10.02-10.10.49:083][982]LogHotfixManager: Applying hotfix Branch-Release-26.20_DefaultDeviceProfiles.ini
[2023.10.02-10.10.49:083][982]LogHotfixManager: Active device profile was referenced by hotfix = 0
[2023.10.02-10.10.49:083][982]LogHotfixManager: Updating config from Branch-Release-26.20_DefaultDeviceProfiles.ini took 0.000000 seconds and reloaded 0 objects
[2023.10.02-10.10.49:083][982]LogHotfixManager: Applying hotfix Branch-Release-26.20_DefaultEngine.ini
[2023.10.02-10.10.49:086][982]LogClass: Warning: Short type name “Fortnite” provided for TryFindType. Please convert it to a path name (suggested: “None”). Callstack:

UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction

[2023.10.02-10.10.49:086][982]LogHotfixManager: Warning: Specified per-object class Fortnite was not found
[2023.10.02-10.10.49:086][982]LogClass: Warning: Short type name “Fortnite” provided for TryFindType. Please convert it to a path name (suggested: “None”). Callstack:

UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction

[2023.10.02-10.10.49:086][982]LogHotfixManager: Warning: Specified per-object class Fortnite was not found
[2023.10.02-10.10.49:086][982]LogClass: Warning: Short type name “Prod” provided for TryFindType. Please convert it to a path name (suggested: “None”). Callstack:

UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction

[2023.10.02-10.10.49:086][982]LogHotfixManager: Warning: Specified per-object class Prod was not found
[2023.10.02-10.10.49:086][982]LogClass: Warning: Short type name “GameDev” provided for TryFindType. Please convert it to a path name (suggested: “None”). Callstack:

UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction

[2023.10.02-10.10.49:086][982]LogHotfixManager: Warning: Specified per-object class GameDev was not found
[2023.10.02-10.10.49:087][982]LogClass: Warning: Short type name “Stage” provided for TryFindType. Please convert it to a path name (suggested: “None”). Callstack:

UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction
UnknownFunction

Steps to Reproduce

open editor, load island to work on: crash at 75% loading

Expected Result

not to cracj

Observed Result

creash 4 time (when i’m lucky) bufoure i’m able to load the project

Platform(s)

PC - window 11

Island Code

3403-3595-8837

Additional Notes

high CPU and memory usage with impact on overall performance. When i’m able to open project … crash fortnite session and/or i receive network timeout responce due to overlooding of CPU (up to 100% instead of 40% in the past) - all driver still update, reinstallation Fortnite / UEFN done with same result, application correction done - no effect - tmp file and registry clean up done befoure installaion - DDU driver clean up installation done (Acer nitro 5 - i7 11 gen + 16G Ram with GeForce GTX1650 Nvidea and Intel iris(r) Xe onboard grafic card) - no effect

LogInit: OS: Windows 11 (22H2) [10.0.22621.2361] (), CPU: 11th Gen Intel(R) Core™ i7-11370H @ 3.30GHz, GPU: Intel(R) Iris(R) Xe
LogInit: Branch Name: ++Fortnite+Release-26.20