Unreal Engine Crashes at Startup

[Dodolfo]

Hi. I have a problem with Unreal Engine 5.3.1
Suddenly, it crashes at startup. I don’t know why.
It happens to me every time when I try to open my project.
I have this screenshot.
Can anyone help me, please?

Screenshot:

[DanM]

What OS are you using?

[Dodolfo]

Hi!

I’m using Windows 10.

After a lot of trial and error, I discovered a custom Anim Modifier blueprint which was causing all of this:

LoginId:7a37146d4d6675402e1262abb07d2e26
EpicAccountId:f2c6aaf29cf948b79d6e556729484853

Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectHash.cpp] [Line: 42] Unidentified failure for object BlueprintGeneratedClass /Game/ThirdPerson/Datatables/AnimModifier/MOD_AnimationEditor.MOD_AnimationEditor_C, hash itself may be corrupted or buggy.

UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject

I’m a little surprised because in previous versions of Unreal Engine, I had never problems like this. Indeed, I had to go to previous BackUps and test my project for 3 days. Until I figured out what is the causer of this editor crashing at startup.

What could I do to continue using custom Anim Modifiers?
Is there any way that I could share my nodes inside of the Anim Modifier that I suspect is causing this crashing?