Investigate same water molecule mentioned in error in vmd or such program likely it is in close contact to other molecule.You can move it manually by altering coordinates in gro text file into more realistic starting position.Or probably even better if you redo your solvatation again (with different parameters?).
On Monday, November 6, 2017, 7:18:18 AM GMT+2, Seera Suryanarayana <paluso...@gmail.com> wrote: Dear gromacs users I am trying to simulate one protein with 180 residues. During energy minimization I got the falling error. Fatal error: step 26: Water molecule starting at atom 28787 can not be settled. Check for bad contacts and/or reduce the timestep if appropriate. I have reduced the em step size from 0.01 to 0.02 as I got this suggestion from archives. I still have the same problem. I request you to give a suggestion how to resolve it. Thanks in advance Surya Graduate student India. -- 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.