ScanSnap Organizer is on v4.1, not 5.1. It is ScanSnap Manager that is on v5. Can I suggest updates?
Look for the “Suggest a correction” link found on the application's page and use it to suggest updated links, screenshots, version information, etc. Note that you must be a registered user at Software/Mac Informer in order to do that.
For more information, refer to http://software.informer.com/partners.php#4