Hello,
I am sorry you're having that issue. It is Norton giving a false positive. The EclipseLogbookSetup.exe is safe and is not a virus. You need to disable Norton before you download and keep it disabled while you install Logbook. After that you should be able to reable Norton.
If you still have issue please go to www.Logbook.com and click on the CHAT NOW button to connect with a techncian that can help.
Thank you and have a great day!