NUMBER:  257

  ERROR CODE:  F

  MESSAGE TEXT:  formatted I/O to unit open for unformatted transfers

  EXPLANATION:  Attempted formatted I/O (such as list-directed or
  namelist I/O) to a unit where the OPEN statement indicated the file
  was unformatted (FORM specifier).  Check that the correct unit
  (file) was specified.

  If the FORM specifier was not specified in the OPEN statement and
  the file should contain formatted data, specify FORM='FORMATTED' in
  the OPEN statement.  Otherwise, if appropriate, use unformatted
  I/O.