I hope you are doing well today! It seems that this issue was fixed in the next
version of LabVIEW. Is it possible for you to open your driver VIs in LabVIEW 8.2? If you don’t have LabVIEW 8.2, can
you attach your problematic VI, so I can try to open in LabVIEW 8.2 and see if
we still get the same error?