1. When the program updates the database, not understand she did it or not. The progress bar is not an indicator. Maybe we should add a pop-up window for a successful update.
2. After the update the database, can not be immediately the Download and install latest version of JRE. Download button is not working. If so conceived and need to restart the program after the update, you will still need to go back to the first item. Or fix the button.)