unreal engine Crashes when i animate custom actors in the Unreal editor.

I am tring to do Animate custom actors in the Unreal editor.

I have built the configuration according to the help documentation. After i finishing the cofiguration, I clicked the RUN in Simulink, and the Simulink shows Initializing, then i click PLAY in Unreal engine, Unreal engine Crashed. And the Crash Reporter is as following. Does anyone knows, how can i solve this problem?

Unreal Engine crash reporter:

LoginId:22a246054a80168068f8b99d6a7c5349

EpicAccountId:dc6e05482bc940758ac5086df0871fa5

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x000002a8

UE4Editor_AutoVrtlEnv_2945!ABicycleActor::Transform() [D:\Desktop\Unreal engine\Local\AutoVrtlEnv\Source\AutoVrtlEnv\Private\BicycleActor.cpp:63]

UE4Editor_MathWorksSimulation

UE4Editor_Engine

UE4Editor_Engine

UE4Editor_Engine

UE4Editor_Engine

UE4Editor_Engine

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor_UnrealEd

UE4Editor

UE4Editor

UE4Editor

UE4Editor

UE4Editor

kernel32

ntdll

I = imread('1.png');
imshow(I)

C = imread('Reporter.png');
imshow(C)

Answer 1

[Nirupama]

Hi @Hansong Ao,

Looking at the second line of the log that you have shared "UE4Editor_MathWorksSimulation" could be due to an issue related to plugin. You can try the following troubleshooting steps:

• Ensure that MATLAB version, Unreal Engine version and MATLAB Unreal Plugin are synced properly.
• If it is the first time that you are opening a custom scene from Simulink, you need to associate, or reparent, the project with the Sim3dLevelScriptActor level blueprint used in Automated Driving Toolbox. For more details refer to https://www.mathworks.com/help/releases/R2022a/driving/ug/customize-scenes-using-simulink-and-unreal-editor.html#mw_bbd01c58-e04a-4fd5-9693-a4a23b9b0323

Looking at the first line of log that you have shared, it appears to me that

• There could an error associated with either transform setting or "Simulation 3D Actor Transform Set" block at line 63 of BicycleActor.cpp.
• BicycleActor.cpp is located at D:\Desktop\Unreal engine\Local\AutoVrtlEnv\Source\AutoVrtlEnv\Private\BicycleActor.cpp

For more help, I would need to look at the files. If possible you can share the uproject and associated cpp files.

Regards,

Nirupama