I have Benchvue, and I/O libs loaded (V18.1.24715.0), and a E4440A connected by NI USB/GPIB adapter. Benchvue comes up with the instrument showing a green check. When I double click on it the SA app launches, fiddles around about 15 seconds, exits, and the instrument now has a red check. I have refreshed it, and it DOES NOT split into multiple entities as some support answers have suggested. I have used connection expert to monitor, and there is no unanswered queries on the monitor, benchvue troubleshooting shows nothing. Connection expert has no problems connecting with the instrument.