After performing the respa simulations, I am unable to restart them.
I got similar one from the mailing lists posted two years back (http://lammps.sandia.gov/threads/msg45388.html)
I was wondering that there was no follow up solution to that mail.
Lammps Version : 3Feb16
I suspect that the problem of restarting started from 3Mar14 version.
I have checked across many inputs with run_style respa and error persists.