FMTIO_UNF

 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.