Unreal Crash When opening Animation Blueprint

Development Programming & Scripting Blueprint
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1

When i’m opening a specific animation blueprint, unreal engine crash.
It happened without any particular reason.

When i dupplicate the blueprint, i can open the copy.

Error :

LoginId:0ff3b8834649994aa4479f8836eae8d2
EpicAccountId:5cdc4fe6520447899e20b81c1891fa67

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000010

UnrealEditor_Engine
UnrealEditor_Persona
UnrealEditor_AnimationBlueprintEditor
UnrealEditor_AnimationBlueprintEditor
UnrealEditor_EngineAssetDefinitions
UnrealEditor_AssetTools
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
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

2

Greetings @AxelMechin

Welcome to the Unreal Engine Community Forums! The Exception Access Violation is something I’ve saw several times. This is usually a GPU driver issue. But, when drivers are up to date, If you use NVidia Control Panel and have an NVIDIA graphics card I’d recommend going in and reset your settings to the global default. That is a very common fix for this problem. If you do not have an NVidia card or this does not resolve the problem, I’d also try maybe temporarily deleting your ‘Saved’ and ‘Intermediate’ folders inside the project folder and test again. (Don’t permanently delete them. Just send them to desktop or to the trash bin so that they can be recovered if it is not part of the problem) I hope this information helps!

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