Hi, I'm having trouble with some FORTRAN code I'm trying to use. I receive an error: Code (Text): At line 769 of file ../src/mpolar.f (unit = 11, file = 'polarx.387') Fortran runtime error: Sequential READ or WRITE not allowed after EOF marker, possibly use REWIND or BACKSPACE Upon inspection of the code the following appears: Code (Text): 55 READ(LU11,END=60) DUMMY GO TO 55 C C C---- the polar dump file doesn't exist, so write new header 56 CONTINUE WRITE(LU11) NAME, ' MSES ', VERSION WRITE(LU11) MACHIN, REYNIN/1.0E6, ACRIT WRITE(LU11) IMATYP, IRETYP WRITE(LU11) NBL, II WRITE(LU11) (ILEB(N), ITEB(N), IIB(N), N=1, NBL) DO 59 N=1, NBL WRITE(LU11) (XB(IB,N), YB(IB,N), IB=1, IIB(N)) 59 CONTINUE C 60 CONTINUE C CLOSE(LU11) RETURN END ! PXINIT as far as I understand the file is closing before it is written to. Upon inspection of the file system the file does get created but it is empty. Could someone possibly explain to me what the code is trying to do and possibly suggest a solution? I'm new to fortran code so I dont understand the syntax. Is there a good online manual for fortran?