09-21-2010 01:34 AM
Should I reinstall the VISA to older version? I would like to try VISA 4.1 as in the successful case, the VISA version is 4.1.
09-21-2010 09:03 AM
Yes- You should down rev the NI VISA revision. 4.1 does support LabVIEW 8.20 and can be downloaded for the NI site here
09-22-2010 08:04 AM
The problem was solved after I installed NI VISA 4.1. Thanks for your help.