Hello - Are you receiving this error when loading the VI? If you are, the cause is usually corruption of the VI on disk. A VI is corrupt when its file structure no longer matches the structure LabVIEW expects. Once a VI is corrupt, it is not possible to recover it. To prevent corruption, keep your hard drive free of errors by running whatever disk diagnostic tools you have available on a regular basis, particularly after system crashes. Also avoid writing to disks that are full or close to full. Always keep backup copies of your VIs on a separate disk. Unfortunately, if you do not have a backup copy, the only workaround is to copy and paste your VI or simply rebuild it.
Have a great day! Becky B. Applications Engineer National Instruments
