Below are listed file errors caused by reasons other than poorly defined
     WORKING and BACKUP directories.  These errors can be received due to the
     following reasons:  the file is in use by another process or user; the
     specified directory does not exist; an illegal DOS file name has been
     specified; or a hardware problem with the network or hard drive has
     occurred.

     "A directory may have been deleted, renamed or moved"
     "An erroneous file specification has been entered under compile or link
      link options"
     "A file is currently being used by another process"
     "Bad filename" <name>
     "Error opening backup source"
     "Error opening backup target"
     "File specification invalid" <name>
     "Invalid application filename" <name>