VIA 5630 error 0xBFFA4004

Hi

We used a VNA PXIe 5630 and when try to execute the calibration  with automatic module ), some time we have the error 0xBFFA4004 .

the error occured at function :

        public int PerformCalibrationAction(string portList, NivnaCalibrationAction actionType)
        {
            int pInvokeResult = PInvoke.PerformCalibrationAction(Handle, portList, actionType);
            TestForError(pInvokeResult);
            return pInvokeResult;
        }

any idea for this error