Camera Calibration not working

Hi,
I have just set up my Falcon2 Pro 40w and trying to calibrate the camera in Lightburn.
Connected laptop to laser via the 2 leads supplied in the box.
I can go through the following steps but no further.

Select:
Laser Tools
Calibrate Camera Lens
Creality Falcon Camera Standard Lens
Calibration Pattern = Circles
But can not go any further as the next button is not highlighted.

Screenshot of the computer screen is attached.
(I have been able to make a simple file, engrave and cut out)
When I insert my card supplied with the laser it says it contains a corrupted file.

Any help is greatly appreciated.
Thank you

In your screen shot under where it says “Camera view” there should be a picture from the camera, try unplugging - replugging in usb lead.

sd cards supplied with the machines are very poor quality - avoid using.

you don’t need to use one if usb lead connected to pc.

Note the 2 usb leads supplied are for the camera and the laser control, I needed longer leads and bought 2 of different colours so I can identify which is which easily - It is best to use a set usb port on the pc for each lead so that the laser and camera stay on there respective com ports.