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Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

When I try to add a new variable on my structure like a Sound Cue my UE4 crash … This is the bug report :

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

UE4Editor_CoreUObject
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_UnrealEd
UE4Editor_Kismet
UE4Editor_Kismet
UE4Editor_Engine
UE4Editor_UnrealEd
UE4Editor_KismetCompiler
UE4Editor_KismetCompiler
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_Kismet
UE4Editor_Kismet
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_KismetWidgets
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
user32
user32
UE4Editor_ApplicationCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

A few things:

  1. Download the Editor Debug Symbols from the UE4 Launcher. It’ll help give a more accurate callstack error.
  2. It looks like you’re writing to an invalid object. If you are trying to live edit, try and recompile outside of the editor (with the editor shut down). Otherwise, post the code where you are trying to add the SoundCue.