I had a look at both drivers and they are both pieces of junk. That is why the download pages say that they are not supported. Whoever wrote them had no idea on how to write a driver. For both drivers, the address is a constant on the block diagram. For the 3325, the VI is HP 3325A Function Generator and the address is set to 1. Change the constant to a control or change the constant to match the actual address (a control would be better).
p.s. Doing a View>Error is NOT the way to see if a VI generates an error. Normally, a VI will have an error out cluster on the front panel that is wired to the error out of functions/subVIs. The View>Error is used to indicate when the VI itself has a compile error (i.e. for a broken wire).I would recomend that you have automatic error handling turned on or add the error out indicator. For the 5335, unless you want to rewrite it and eliminate the stupid sequence structure, you will have to add sequence locals to pass the error from one frame tothe next.
