[gmx-users] do_dssp segmentation fault error

[bunty xy]

Hello Friends
I have installed GROMACS 4.5.5 on linux.
I put the DSSP Executable in /usr/local/bin
when i run the following command:
do_dssp -s md.tpr -f md.trr -b 40 -e 50 -o fws_ss.xpm


i got the following error.
Reading file md.tpr, VERSION 4.5.5 (single precision)
Reading file md.tpr, VERSION 4.5.5 (single precision)
Segmentation fault


Please tell me how can i resolve this " Segmentation fault"   error.