Hello Dr. Fission, Info about a free upgrade toolkit can be found <a href=3Dhttp://ae/operations/ae/public.nsf/webPreview/429E45271CFD683786256D= 87006B1EEF?OpenDocument>here</a>. This toolkit will help you convert your code up through the different versions of LabVIEW.
If none of these suggestions help, please post the software and versions you are using, the applicable portions of your code, and any other information that may help, and I=92ll be happy to look further into it. Have a nice day! Robert M Applications Engineer National Instruments