CVI using imaqCalibrationSetAxisInfoByReferencePoints

Dear all,

did anybody ever used the NI-Vision function

      imaqCalibrationSetAxisInfoByReferencePoints()

in Labwindows / CVI?

It seems that the function requires a calibrated image.

Now, I do have one but I get the error

    The source/input image has not been calibrated.

At least I guess that my input image is calibrated, since I use before:

    imaqLearnCalibrationPoints()

Any hint appreciating,

Philipp