ADOBE DIGITAL EDITIONS "NO VERSION" and ADOBE DIGITAL EDITIONS 3.0

Hello,

Which is the Most Recent Version ? 

OR Do I Need Both ?

For your Info:  Adobe Digital Editions "NO VERSION" Listed     was created March 26, 2015         and was Modified March 26, 2015  44    bytes

                       Adobe Digital Editions 3.0                                    was created December 17, 2013. and was Modified March 26, 2015  39.8  bytes

Thank you for your assistance.

Lee