I was given a Kappa Tracer/Edger machine. It was working fine until I decided to run a calibration on my tracer. I have the plastic portion which patterns fit in and it calibrated fine but apparently there is another part that was not in the stuff I received and now I am getting the A12 message that the tracer isn't calibrated because I don't have the necessary part to use to finish the calibration. This is stopping me from getting back to tracing frames and edging lenses. Is there anyway to override this so I can get back to edging lenses? Thanks very much for the help. I have reached out to Essilor customer service and Coburn but as of yet noone has been available at either place to assist me.