Ask yourself this, if you hadn't have ran that program would you have noticed a problem?
Also how reliable are these programs?
I am sure hard drive manufactures love these programs that throw out these errors/warnings.
Is there any tools available from the hard drive maker you could try out to see if it confirms the same.
By the way my storage drive has had this for a few months now, nothing I can do about it so I just live with it, if you are concerned because you have material you really want then you should back it up somewhere safe or get a new one and copy the contents.