UE5 Crashes to desktop every time I open my level

[Scrubzirra]

Hi so to start out I’m very new to Unreal Engine. I’m very stressed as what I’m working on is for an assignment that is due tomorrow.

I’ve been working on an environment project in UE5.3.1 and while I was working, UE5 crashed out of nowhere. I rebooted UE and was prompted to either load an autosave or skip and load my last actual save which is what I opted to do. The project itself opens fine but when I try to load the level I’m working in, it instantly crashes to desktop. Any help would be greatly appreciated, I have tried figuring out how to manually load an auto save but haven’t been able to work out how.

Crash log:

Assertion failed: !HasAnyFlags(RF_NeedPostLoad) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialInstance.cpp] [Line: 2444]

UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Landscape
UnrealEditor_Landscape
UnrealEditor_Landscape
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Core
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

[ZMcIvor]

Same thing happened to me. Does anyone have suggestions please? I have not made or modified any new materials or material instances in recent sessions of using the level that has stopped working and crashes everytime I try to open it. I can also open the project just fine.

[SupportiveEntity]

Hey there @Scrubzirra and @ZMcIvor! Welcome to the community! This error can sometimes stem from a material instance failing to save correctly. You can try to discern which one is triggering the error by testing everything you had in a new map individually, or you could just back your project up first and delete both the Saved and Intermediate folders and launch the project to regenerate them. If that fails you may need to discern which material is failing and delete and remake the material in question.

Unreal Engine keeps crashing

This is the crash log [Screenshot 2023-09-11 050245] I was following UnrealSensei’s youtube tutorial and he was explaining the work of blueprints. And to check the input he used “print string” node and started game simulation to check it. [image] I followed, added a keyboard input, PrintString and immediately after pushing “play” UE crashed So, after restarting UE, multiple PC restarts I still have the same problem and now it doesn’t allow me to open the level which I was using for tutori…

[Heisenberg_2035]

Hi, were you able to find a fix for this?

My UE works fine with DX11 but as soon as I change it to DX12 it starts crashing