[CRITICAL] Can not Launch Session: UEFN Crashes

KeyserScholze · March 15, 2024, 6:22pm

thank you

i’m happy to change any settings if it helps to diagnose this, just let me know

HalcyonKnight96 · March 15, 2024, 6:27pm

@KeyserScholze your crash seems to point to Water Rendering. Are you doing anything unique or interesting with Water in your project? would it be feasible to delete any water actors in your map and try after?

KeyserScholze · March 15, 2024, 7:00pm

i have a river and a lake on my island (based on one of the island templates) surrounded by ocean

i’m quite new to UEFN, it’s taken me ages to get this far, i don’t really want to start deleting stuff as i’m worried i won’t be able to put it back the same

i’ve discovered that if i “Exit session” and then “Launch session”, it does not crash, whereas if i “Push Changes” it does crash, so i think i’ll just do that instead

if you can copy my project from version control to use as a test scenario then feel free

Old_Ghostt · March 16, 2024, 7:15am

Can i send you my crash report as well, i have a 8 maps that keep crashing everytime i try to go open it. It started every since this season started.

HalcyonKnight96 · March 16, 2024, 2:30pm

@davidpkami this might help your problem could you delete the folder located here:

C:/Users//AppData/Local/UnrealEngine/Common/DerivedDataCache

HalcyonKnight96 · March 16, 2024, 2:31pm

Yes sure.

davidpkami · March 16, 2024, 4:51pm

Hey man! It just solved it. Thank you so much

Old_Ghostt · March 16, 2024, 9:55pm

It’s fine i just did the thing you told DavidP to do & it WORKED!!! Thank you very much

SENATOR_Z · March 17, 2024, 7:11am

@HalcyonKnight96 Hey there I’ve got the same issue here and I tried removing the folder (DerivedDataCache) you mentioned but it did not help with my crash, I tried verifying, removing and reinstalling the whole app nothing helps. I’ll send the log/dmp files related to this crash, here is also the crash report message I got:

LoginId:278e729d4bdc0c8b9c833cabb6d53d67
EpicAccountId:5e91f95f382a4b1f8f2f468e28aed48a

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

I also choose “send and close” everytime it crashed.

UnrealEditorFortnite.log (2.8 MB)
UEMinidump.dmp (1.7 MB)

Kawelo · March 17, 2024, 7:24am

May I send my crash report as well? My project keeps crashing every time I launch the session, giving the similar crash report above.

Kawelo · March 17, 2024, 7:49am

Here are the files from my crash report:
UnrealEditorFortnite.log (9.4 MB)
CrashContext.runtime-xml (187.3 KB)
CrashReportClient.ini (180 Bytes)
UEMinidump.dmp (1021.1 KB)

xd_ItsKarMa · March 17, 2024, 8:12pm

I get the same error log:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION 0x0000000000000000

UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll

Removing the folder stated above doesn’t fix it for me.

I also found this in my error UnrealEditorFortnite.log

[2024.03.17-19.12.40:650][216]LogSolarisIde: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Script Error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

[2024.03.17-19.12.40:650][216]VerseBuild: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Script error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

[2024.03.17-19.12.40:650][216]VerseBuild: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34) : Script error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

[2024.03.17-19.12.40:650][216]LogSolarisIde: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Script Error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

[2024.03.17-19.12.40:650][216]VerseBuild: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Script error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

[2024.03.17-19.12.40:650][216]VerseBuild: Error: D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34) : Script error 9000: Linker task graph contains a cycle:
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/vote_manager_device.verse(13,25, 81,42): Verse compiler info: Unable to assemble `vote_manager_device` (CDO instantiation, etc.).
    D:/Fortnite Projects/HermanosBoxfight/Plugins/HermanosBoxfight/Content/box_fight_manager.verse(16,23, 222,34): Verse compiler info: Unable to assemble `box_fight_manager` (CDO instantiation, etc.).

creativegoblinn · April 8, 2024, 1:10am

did you ever fix it?

creativegoblinn · April 8, 2024, 1:13am

@Kawelo were you able to launch a session and what did you do to fix it? I’ve seen your circus map too, great work.

Kawelo · April 10, 2024, 1:27am

It kinda fixed itself after the update, but I would recommend restoring your global settings in the NVIDIA control panel under “Manage 3D settings.”