[gmx-users] problem in generation of tpr file

[Anushree Tripathi]

I am going through the Justin Lemku tutorial for KALP15 in DPPC.  I have
reached step three, when I try to generate a trp file for DPPC only by
means of :

grompp -f minim.mdp -c dppc128.gro -p topol_dppc.top -o em.tpr

I get the following warning:

Fatal error:
Atomtype OW not found

Any idea as to what causes this problem?
Please guide me.
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