[gmx-users] grommp problem in gromacs 4.6.1

[cyberjhon]

Hi guys

I am trying to generate a .tpr file using grommp in gromacs 4.6.1.
Unfortunately I am obtaining a very strange error:
-------------------------------------------------------
Program grompp, VERSION 4.6.1
Source code file: /N/u/ortgrp/Quarry/src/gromacs-4.6.1/src/kernel/toppush.c,
line: 1336

Fatal error:
Atomtype Zn2+ not found
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
-------------------------------------------------------

The problem is that I do not have Zn2+ in my files. Neither in the .gro or
in the .top 
I tried with a previous version 4.5.5 and it worked perfectly. 
I am using opls and it does not contain Zn2+, so that is more rare.

I can not attach the .gro and .top files because the are like 300MB each.

Can you tell me something? is this a bug?

Thanks 

John Michael




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