Use the File | Online | Check for Update
link 
to download and install an update for MapViewer if you do not have the
most current version. An update contains minor changes to the program.
There are no new features added in updates. A list of changes is located
at http://www.goldensoftware.com/MapViewer-Version-Info.
Before using this command, make sure your computer is connected to the Internet. Follow the directions in the dialog to complete the update if an update is available.
To obtain an upgrade when available (i.e. MapViewer version 7 to MapViewer version 8), contact Golden Software.