[gmx-users] Failed to execute command: Try specifying your dssp version with the -ver option.

[Andrew Bostick]

Dear Gromacs users,

I did MD simulation of my peptide on Gromacs 5.1.3. I want to do do_dssp
analysis.

After using following command:

gmx_mpi do_dssp -f *.xtc -s *.tpr -n index.ndx -o -sc

Fatal error:
Failed to execute command: Try specifying your dssp version with the -ver
option.

According to the manuall for gmx do_dssp, I used following command:

gmx_mpi do_dssp -f *.xtc -s *.tpr -n index.ndx -o -sc -ver 2

But, again:

Fatal error:
Failed to execute command: Try specifying your dssp version with the -ver
option.

How to fix it?

Any help will highly be appreciated.

Best,
Atila