[Cause]
Calibration with the fixture (calibration device) mounted on the robot requires the robot position at the time of calibration.
[Countermeasure]
Calibration with a robot-mounted fixture cannot use images loaded from a file. Press the capture button to acquire an image. Reselecting the user frame number or camera also makes the robot position data from the previous image unavailable, so press the capture button again to acquire another image.