[gmx-users] Syntax error -File dppc.itp line 1

Poncho Arvayo Zatarain poncho_8629 at hotmail.com
Tue Apr 7 20:57:09 CEST 2015

 im doing a DPPC simulation and when i use grompp to generate tpr file 
this appears: Fatal error: Syntax error -File dppc.itp, line 1. Last 
line read: '[moleculetype]' Invalid order for directive moleculetype. 
What can i do? My dppc.itp includes

[ moleculetype ]
; Name   nrexcl
DPPC     3

[ atoms ], [ pairs ], [ dihedrals ]

#include "lipid_posre.itp"

And my topology file is: 

; Include chain topologies
#include "dppc.itp"
#include "ffG53a6.itp"
#include "dppc_53a6.itp"

; Include water topology
#include "spc.itp"

; Include ion topologies
#include "gromos53a6_lipid.ff/ions.itp"

; System specifications
[ system ]
DPPC Bilayer, 

[ molecules ]
; molecule name nr.
DPPC 128
SOL 3655 		 	   		   		 	   		  

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