Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000044

Development Programming & Scripting
1

Hey guys, I’m having a weird issue lately.

Pretty much whenever I make any change and try to run game in editor second time, the engine crashes, leaving this a reason:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000044

UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_UMG
UE4Editor_UMG
UE4Editor_PropertyPath
UE4Editor_PropertyPath
UE4Editor_UMG
UE4Editor_UMG
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_UMG
UE4Editor_UMG
UE4Editor_UMG
UE4Editor_UMG
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_Slate
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_Slate
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_SlateCore
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

For some reason, this issue does not replicate at all when I’m working on the same project on different device.

Any advice how to handle it?

2

Found the possible issue:
At the same time GameState that contained an component with variable was spawned as another widget that had a bind function with macro referencing to that GameState variable, causing the widget to search for that variable at the (probably) same frame of animation causing it to trying to access technically not created yet.

Disconnecting the macro that tried to reference that variable stopped causing engine to crash whenever I tried to launch the game.

3

“EXCEPTION_ACCESS_VIOLATION” happen when you’re trying to interact with a null pointer.

Maybe you’re calling a function from somewhere else before your “GameState” class is able to spawn that widget.