Not finding the "donut"

[Cyrille-de-Brebisson]

Hello,

This is a double post with the sharpcap focurm as I do not know what is the best way to contact you.

I am trying to use this script to collimate my telescope, but it is not finding the donut...
Can you help me figure out why?
The telescope is a HAC125, it has the camera at prime focus (no 2nd mirror) and the "shadow" is the camera usb cable/connector.

Thanks,
Cyrille