As someone already mentioned, the following can be found among the AMBERport FAQ:

>>
Why do I get a grompp warning "missing white space after `#define proper_*'?" Set "cpp = /lib/cpp -traditional" in your .mdp file to remove these warnings, which result from the use of the N* atom type of the AMBER family of force fields and can be ignored.
<<

Did you try doing that?

Good luck!

/Erik

7 maj 2007 kl. 22.29 skrev root:

David and GROMACS users:
Sorry we changed the error message in ...

/usr/local/gromacs/share/top/ffamber03bon.itp:541:22:  warning: spaces
are absent in target after the name of macro

because of the original message was in spanish.

We checked these files above. We run GROMACS in fedora 6.0
We analyzed the warning messages. They correspond to a format of
description of a dihedral angle. For example the 538:22 warning
 correspond to le line 538 column 22

 #define proper_X_CT_N*_X
 and there are a format problem with the * symbol.

 we don't know that to do still with this.


Thanks in advance

root wrote:
                                De:
David van der Spoel
<[EMAIL PROTECTED]>
                       Responder a:
Discussion list for GROMACS users
<gmx-users@gromacs.org>
                              Para:
Discussion list for GROMACS users
<gmx-users@gromacs.org>
                            Asunto:
Re: [gmx-users] Problems using
grompp and amber force field
                             Fecha:
Mon, 07 May 2007 20:42:51 +0200
(15:42 ART)

The procedure to simulate the DNA dodecamer was:

1) We generate the DNA topology and coordinates in gromacs format (with
the amber03 force field ) using the pdb2gmx program:

pdb2gmx -f dickerson.pdb -o dick.gro -p dick.top -water spce

2) and we obtain the box with the dodecamer plus water coordinates
using editconf and genbox:

editconf -f dick.gro -o dick03.pdb -bf triclinic -box 6 5 6 -angle 90 90
90
genbox -cp dick03.pdb -cs -o dick02.pdb -p dick.top

3) with the files dick03.pdb and dick.top we run grompp:

grompp -f em -c dick02.pdb -p dick.top -o dick.tpr -pp topo2.top

The output of the program indicate
...
creating statusfile for 1 node...

Back Off! I just backed up mdout.mdp to ./#mdout.mdp.20#
checking input for internal consistency...
calling /usr/bin/cpp...
In the file included of /usr/local/gromacs/share/top/ffamber03.itp:19,
                 de dick.top:11:
/usr/local/gromacs/share/top/ffamber03bon.itp:538:22:
warning: spaces are absent in target after the name of macro
/usr/local/gromacs/share/top/ffamber03bon.itp:541:22:
warning: spaces are absent in target after the name of macro
/usr/local/gromacs/share/top/ffamber03bon.itp:543:22:
warning: spaces are absent in target after the name of macro
/usr/local/gromacs/share/top/ffamber03bon.itp:547:21:
warning: spaces are absent in target after the name of macro
/usr/local/gromacs/share/top/ffamber03bon.itp:559:19:
warning: spaces are absent in target after the name of macro
processing topology...

        check the files above. is the error message correct? then fix
        it.

        what kind of system are you running this on?

processing topology...
Generated 2701 of the 2701 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2701 of the 2701 1-4 parameter combinations
-------------------------------------------------------
Program grompp, VERSION 3.3.1
Source code file: toppush.c, line: 758

Fatal error:
Atoms in the .top are not numbered consecutively from 1

-------------------------------------------------------

We tested the dick.top file, and we verified that the atoms
        are numbered
consecutively from 1 to 758.
We analyzed the warning messages. They correspond to a format
        of
desciption of a dihedral angle. For example the 538:22 warning
correspond to le line 538 column 22

#define proper_X_CT_N*_X
and there are a format problem with the * simbol.

we don't know that to do still with this.



Thanks in advance

Mario Campo and Griselda Corral
Fac. de Cs. Exactas y Naturales
UNLPam




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        --
        David.
______________________________________________________________________ __
        David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics
        group,
        Dept. of Cell and Molecular Biology, Uppsala University.
        Husargatan 3, Box 596,          75124 Uppsala, Sweden
        phone:  46 18 471 4205          fax: 46 18 511 755
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_______________________________________________
Erik Marklund, PhD student
Laboratory of Molecular Biophysics,
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,  75124 Uppsala, Sweden
phone:  +46 18 471 4537         fax: +46 18 511 755
[EMAIL PROTECTED]       http://xray.bmc.uu.se/molbiophys


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