In order to open a database you must open the Database Control Pro Viewer Window. There are two ways of doing this:
1. Open the Database Control Pro Setup Window, look for the database you want to open in the list of databases and click 'View/Edit' next to the database name.
2. Open the Database Control Pro Viewer Window by going to the Top Menu Bar, Window, Database Control Pro, Viewer Window. Then select the database you want to open from the list of databases.
Note: The Viewer Window in its current state is not very good for opening large databases. We aim to improve this functionality in a future update.