I'm trying to install NI-VISA 5.3. It gave me the error below:
Unsupported version of NI-VISA detected
A version of NI-VISA that is not supported on this operating system has been detected. You must cancel this installation and uninstall the older version before continuing. Visit ni.com/info and enter the Info Code CleanVista for more information.
I then tried to uninstall NI-VISA 2.6.0 Runtime. The uninstallation appears to proceed normally, but when it finishes the NI-VISA 2.6.0 Runtime is still installed.
I'm running Windows 7 64-bit on my workstation.