Hi, The atomtypes directive must appear early. So the acpype files must be edited to have all the atom types in a block before any of the moleculetypes. This is covered specifically at http://www.gromacs.org/Documentation/Errors#Invalid_order_for_directive_xxx
Mark On Mon, 10 Jul 2017 13:35 Khadija Amine <kh.ami...@gmail.com> wrote: > Hello, > > I have read the documentation and tried to solve the problem but still > having the same error. > > Any suggestions, please? > > > *Khadija Amine* > Ph.D. Biology and Health > Biochemistry & Bioinformatics > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before > posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.