cannot optimize -- AIJ file <str> had its previous AIJ file
  backed up via a no-quiet-point backup

  Explanation:  An AIJ file for which the previous AIJ file was
  backed up with a no-quiet-point backup, cannot be optimized.  A
  no-quiet-point backup can leave incomplete transactions in an
  AIJ file, and AIJ optimization cannot handle incomplete
  transactions within an AIJ file.

  User Action:  No user action is required.  This AIJ file cannot
  be optimized.