Dear Gromacs Users,<br>The file which I used for ions.itp is, now I change oplsa_405 by Na but it give again the error <br><span style="font-weight: bold; background-color: rgb(255, 255, 64);">Fatal error:</span><br style="font-weight: bold; background-color: rgb(255, 255, 64);"><span style="font-weight: bold; background-color: rgb(255, 255, 64);">Atomtype 'Na' not found!</span><br>Please guide me.<br><br><br><br><span style="font-weight: bold;">[moleculetype]</span><br style="font-weight: bold;"><span style="font-weight: bold;">; Name nrexcl</span><br style="font-weight: bold;"><span style="font-weight: bold;"> sodium 1</span><br style="font-weight: bold;"><br style="font-weight: bold;"><span style="font-weight: bold;">[ atoms ]</span><br style="font-weight: bold;"><span style="font-weight: bold;">;
nr type resnr residue atom cgnr charge mass typeB</span><br style="font-weight: bold;"><span style="font-weight: bold;">chargeB massB</span><br style="font-weight: bold;"><span style="font-weight: bold;"> 1 NA 1 NA NA 1 1 35.453 ;</span><br style="font-weight: bold;"><span style="font-weight: bold;">qtot 1</span><br style="font-weight: bold;"><span style="font-weight: bold;"> 2 NA 2
NA NA 2 1 35.453 ;</span><br style="font-weight: bold;"><span style="font-weight: bold;">qtot 2 </span><br style="font-weight: bold;"><span style="font-weight: bold;"> 2 NA 3 NA NA 3 1 35.453 ;</span><br style="font-weight: bold;"><span style="font-weight: bold;">qtot 2</span><br style="font-weight: bold;"><span style="font-weight: bold;"> 2 NA 4 NA
NA 4 1 35.453 ;</span><br style="font-weight: bold;"><span style="font-weight: bold;">qtot 2 </span><br style="font-weight: bold;"><span style="font-weight: bold;"> 2 NA 5 NA NA 5 1 35.453 ;</span><br style="font-weight: bold;"><br style="font-weight: bold;">Regards,<br style="font-weight: bold;"><br style="font-weight: bold;"><br><BR><BR><STRONG><FONT color=#007f40>SYED LAL BADSHAH <BR>M.Phil Scholar <BR>NCE in Physical Chemistry, <BR>University of Peshawar. <BR>NWFP,Pakistan. <BR>Cell # 03349060632.</FONT></STRONG><p> Send instant messages to your online friends http://uk.messenger.yahoo.com