I copied a labview program developed in LabView 2009 Win XP to my new operation system Win 7 with LabView 2013. I got the Old Visa Open error as titled when I run it for controlling Agilent 4149A. The program works fine in LabView 2009 (Win XP) using same set of hardware. Would this be a compartibility problem? I'm using Agilent GPIB/USB interface.
Thanks.