Hello! There seems to be a crash with the new version, related to FAsyncLoadingThread. A friend asked me for help as they were getting fatal error when joining their singleplayer game. Verifying integrity on Steam didn’t fix it for them. I have not tried the game client myself, but I am getting very similar error as well, when trying to run a dedicated server.
Basic Info:
Platform: Steam
Issue Type: Crash
Game Mode: Singleplayer / Online Private
Server Type: N/A
Map: Exiled Lands
Server Name: none
Mods: none / various
Bug Description:
My crash report (dedicated server):
[2025.08.19-16.28.22:165][ 0]LogThreadingWindows:Error: Runnable thread FAsyncLoadingThread crashed.
[2025.08.19-16.28.22:165][ 0]LogWindows:Error: === Critical error: ===
[2025.08.19-16.28.22:165][ 0]LogWindows:Error:
[2025.08.19-16.28.22:165][ 0]LogWindows:Error: Fatal error!
[2025.08.19-16.28.22:165][ 0]LogWindows:Error:
[2025.08.19-16.28.22:165][ 0]LogWindows:Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000008
[2025.08.19-16.28.22:165][ 0]LogWindows:Error:
[2025.08.19-16.28.22:165][ 0]LogWindows:Error: !0x0000000000000000
[2025.08.19-16.28.22:165][ 0]LogWindows:Error:
[2025.08.19-16.28.22:165][ 0]LogWindows:Error: Crash in runnable thread FAsyncLoadingThread
Friend’s crash report (client, singleplayer):
Fatal error: [File:C:\B\tech_exiles\code\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 3485]
Could not find SuperStruct CanBeTargeted to create CanBeTargeted!0x0000000000000000
Crash in runnable thread FAsyncLoadingThread
Bug Reproduction:
No idea. Happens every time I try to launch my dedicated server and whenever a friend tries to join any server or even a singleplayer game.
EDIT: This might be an issue with mods that have not yet updated. While I somehow got this error even without mods, my friend was able to resolve it now by disabling outdated mods.
