[gmx-users] Error running gromacs tutorial

[Suprim Tha]

I was trying Gromacs based upon the tutorial on
http://www.mdtutorials.com/gmx/lysozyme/05_EM.html
However, when I run the command gmx mdrun -v -deffnm em, only em.log,
em.edr and em.tpr are formed but not em. trr and em.gro Without the energy
minimized .gro file, I cannot continue further. Please help me with this. I
have tried two different proteins and still I am stuck with the same step.
Thanks in advance.