Question About Converting Official yolov8-seg to ONNX Format

[HsiaoCH]

Hello, author, thank you for your code; it has significantly sped up my development process.

I encountered an issue during usage:
I downloaded yolov8s-seg.pt from the official YOLO repository and used the following code to convert it to ONNX format:

from ultralytics import YOLO

model = YOLO("yolov8s-seg.pt")
model.export(format="onnx")

Afterward, when running the following in C#:

var results = yolo.RunSegmentation(image, 0.25, 0.65, 0.7);

I encountered the error:
System.AccessViolationException: 'Attempted to read or write protected memory. This is often an indication that other memory is corrupt.'

However, if I use yolov8s-seg.onnx from YoloDotNet\test\assets\Models, there are no issues.

Out of curiosity and for learning purposes, I would like to know:

What is causing the error?
Is my method for converting yolov8s-seg.pt correct? If not, how can I correctly perform the conversion?
Looking forward to your response, thank you!