[gmx-users] error while executing do_dssp program

[Nizar Masbukhin]

hi gromacs user,

when i try to compute secondary structure using do_dssp program, the error
message appear:

"Program do_dssp_mpi, VERSION 5.0.2
Source code file: /home/user/gromacs-5.0.2/src/gromacs/fileio/futil.cpp,
line: 863

Fatal error:
Permission denied for opening ddhCTh1r
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors"

i have installed dssp program, and i have set the environment DSSP to the
path where i install DSSP.

could anyone please explain to me whats wrong?

-- 
Thanks
My Best Regards, Nizar