Hello,<br><br>when executing this command g<i><u>rompp -f pull.mdp -c npt.gro -p topol.top -n index.ndx -t npt.cpt -o pull.tpr<br>d ,fatal error is giving that "Group reference not found in indexfile.</u></i>"................<br>
<br>Why am i getting this error??<br><br>Thanks.<br>