[gmx-users] protein-ligand tutorial problem

[rama david]

Hello
                I am doing JUSTIN Protein-ligand tutorial.
I complete your Lysozyme tutorial before these one.
I complete tutorial upto the make-ndx
but after giving command grompp for nvt.tpr
production..
 I get the following error
No molecule were defined in the system ,


I know somewhere I make mistake while following
instruction , but  I did it for 3 times,so
please help me to check my mistake
(i am using GROMACS 4.5.4 )

After giving the command make_ndx
I choose the option system..Is
 it the error source???

thank you a lot in Advance