From: John Stone (
Date: Wed Jun 02 2010 - 11:01:15 CDT

  You have not provided nearly enough information for anyone to be able
to help you. At the very least you would have to describe exactly the
the steps you took, what commands you ran, and the exact output you got,
along with the associated structure files you used. Nobody here is a mind
reader, without the necessary details others can't even tell what it is
that you tried to do.

I would suggest that if you haven't already gone through the NAMD and VMD
tutorials about building structures and the like, that you begin there
first before doing anything else with your own structures:

Once you've gone through the tutorials you will be much more familiar
with how the various software works and what the different files are
used for.

  John Stone

On Wed, Jun 02, 2010 at 10:09:08AM -0500, vani panguluri wrote:
> hello users,
> i am using vmd 1.8.7 version and try to develop the namd..........
> in this process i need to generate PSF and XSC files.............
> while working on PSF using autopsf gen it was producing errors like
> atleast one atom should be specified can you people help in solving these
> errors and also can you people what are the steps i need to follow to
> generate these PSF and XSC files...........
> vani

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