5.1.1 update problem

General Feedback & Requests
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1

This is a real problem 5.1.1 startup crash. NISS and DLSS in my game. Have no idea how to remove from game to get this update to work. I need to go back to 5.1 asap but there is no option to do so. I am losing so much time because of this. Never should have upgraded. Whats done is done!
Please help me.

LoginId:
EpicAccountId:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00007ff15bb4fd20

UnrealEditor_RenderCore
UnrealEditor_NISShaders!AddSharpenOrUpscalePass() [C:\BuildAgent\work\206b5a556ada38bf_Stage\Plugin\NIS\HostProject\Plugins\NIS\Source\NISShaders\Private\NISShaders.cpp:632]
UnrealEditor_NISCore!FNVImageUpscaler::AddPasses() [C:\BuildAgent\work\206b5a556ada38bf_Stage\Plugin\NIS\HostProject\Plugins\NIS\Source\NISCore\Private\NISUpscaler.cpp:204]
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

2

same problem, use 5.1.0 engine source code to work on project, hope nvidia or epic fix this soon

3

Ok, after much panic. I think I have 99.9% fixed. I started 5.1.1 with a blank save, and added plugins. Closed it , and transfered Content folder from my game folder to my new 5.1.1 saved folder, manually. Also overwrote DefualtInput.ini from Config folder to the new blank config. Everything seems to be working other then a few things I need to do in Project Settings.

I still think 5.1.0 should be an option to go back to on the in stall menu.

2 Likes
4

Can you send the generated logs? (PROJECTDIR/Saved/Logs) :eyes:

5

If you’d like to give it a try, these steps seem to have fixed at least one of the issues:

:eyes:

Related to: 5.1.1 + TSR = crash

1 Like
6

Per https://forums.developer.nvidia.com/t/dlss-not-working-with-unreal-engine-5-1-1-update-crashing/241970:
This is a clean, blank project with DLSS plugin installed. Running PIE mode causes immediate crash.
LoginId:xxx
EpicAccountId:xxx

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000000780000006b

UnrealEditor_RenderCore
UnrealEditor_DLSSUtility!AddVelocityCombinePass() [C:\BuildAgent\work\206b5a556ada38bf_Stage\Plugin\DLSS\HostProject\Plugins\DLSS\Source\DLSSUtility\Private\VelocityCombinePass.cpp:126]
UnrealEditor_DLSS!FDLSSSceneViewFamilyUpscaler::AddPasses() [C:\BuildAgent\work\206b5a556ada38bf_Stage\Plugin\DLSS\HostProject\Plugins\DLSS\Source\DLSS\Private\DLSSUpscaler.cpp:410]
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

DLSSTest.log (146.8 KB)

3 Likes
7

Same problem here.
I set r.AntiAliasingMethod=3 and TSR=0 still not starting.

8

backup backup and version control from now on.
I’d not mess with it and give NVIDIA a few days or weeks to update the DLSS plugin to 5.1.1, their website still states it is for 5.1.
I’ll run into this myself too today :slight_smile: .

DLSS - Download and Get Started | NVIDIA Developer

9

Running with a loaded DLSS plugin on UE5.1.1 on a PC that does not support DLSS does not crash on PIE.
A temporary workaround would be simply to disable DLSS then.
Alternatively download the plugin from the NVIDIA site, the zip will contain enough documentation on how to configure it or disable it if you still need the plugin to be loaded.

10

Thanks! Panicked a little.

Adding r.AntiAliasingMethod=3 in DefaultEngine.ini fixed the crash for now.
When I added it, didn’t work at first… then I placed it after [/Script/Engine.RendererSettings] and it worked.

When I’m inside and manually change back to TSR AA, it crashes again… What should I change in my project to get it working back in TSR? My other (simpler) projects don’t seem to have this crash at startup while using TSR.

Using RTX 2080 Ti.

11

After couple of hours manipulating my project. I solved the issue by removing the configuration files from the project and disabling the Nvidia DLSS, INS plugins and removing all the level editor blueprints related to DLSS.

12

Same here, DLSS/NIS plugins crash my 5.1.1 project on start. Removing usage from my project solved it temporally. Please fix this ASAP, we are on a very tight schedule here and need it for final shipping.

1 Like
13

NVIDIA has posted a new build of DLSS 2 for UE 5.1.1 which I have confirmed works perfectly for me: https://developer.nvidia.com/rtx/dlss/get-started#ue-version

Now we just need the DLSS 3 plugin!

3 Likes
14

OK, I manage to get DLSS working with Unreal 5.1.1, but I still have a crash when I open a bluprint actor and click on Viewport, even with the latest version (5.1.1) of the plugin.

15

UE 5.1.1 with DLSS 5.1.1 plugin still crashes on start, nothing solved.

16

If the log is any different from the above, posting it here would be useful :slight_smile:

17

I found out that it was the UltraDynamic Sky plugin causing my crash, as someone else has mentioned. Updating it (reinstalled actually) to the latest fixed my crashes.

18

I had faced the same issue and just changed:
[/Script/DLSS.DLSSSettings]
bEnableDLSSInEditorViewports=True

to

[/Script/DLSS.DLSSSettings]
bEnableDLSSInEditorViewports=False

and it fixes my issue.
Hope it will fix yours too!