how get rid of outdated data?

I used Espionage 2 at one point and then did not use for a long period. Recently Espionage was part of the MacUpdate package and so I installed Espionage 3. At that point, I was asked if I wanted to retain the older data; I was afraid something useful might get irretrievably lost and so clicked on "yes". Now I get alerts to the effect that certain files cannot be mounted; in fact, I myself cannot find the m and believe they have been deleted or moved to another hard disc. My problem is to get rid of these data so the alerts don't appear. I also have two separate Espionage icons on my menu bar and don't know how to get rid of the older one. Will I have to do a complete delete of the app and reinstall it? At the moment this is the only solution I can find.