Automatic detection of crop marks could not be accomplished.
Load the media at the correct position and perform detection of crop marks again. If repeating automatic crop-mark detection results in an error again, perform manual crop-mark detection. If crop marks cannot be detected even manually, try using [CROP SENSOR ADJ.] (the correction function of the sensor for reading crop marks) to perform the correction. Depending on the media, it may not be possible to detect crop marks automatically.