Health Error notification

After defragging one of three drives, a 'Health Error' message appears, and when I go into the health Tab one of the folders appears in Red.

What does this mean?(no comment about this in your user guide)--

And what do I need to do to correct this, delete it or what am supposed to do with this item??? Thanks ronbob

it's simply relaying S.M.A.R.T information from the hard drive.

what field is appearing in red?