From: John Stone (
Date: Mon Jan 11 2021 - 16:22:09 CST

  As others mentioned earlier today, your not did not clearly indicate
whether or not you have downloaded the NAMD tutorial files package along
with the PDF. I have double checked the NAMD tutorial files and indeed
the required CHARMM parameter files exist in the tutorial files archive:

% cd namd-tutorial-files/
% ls
1-1-build 1-4-gbis 2-3-energies 2-6-heat-diff 3-2-pullcf
1-2-sphere 2-1-rmsd 2-4-temp 2-7-echoes README
1-3-box 2-2-maxwell 2-5-spec-heat 3-1-pullcv common
% find . -name "*.inp"

Please make sure that you have downloaded AND ARE USING the
NAMD tutorial files package, available here (in both .tar.gz and .zip forms):

You can also view the individual NAMD tutorial files here:

Best regards,
  John Stone

On Fri, Jan 08, 2021 at 04:07:43PM -0800, Tiglath Moradkhan wrote:
> Hi VMD community
> I'm having problems running the NAMD configuration file in the NAMD
> tutorial,
> The
> CHARM file required is par_all27_prot_lipid.inp. However this file does not
> seem to be provided in the tcl plugin folder. The only file is
> par_all27_prot_lipid_na.inp So how can I access the first file? If the
> latter one is the same as the first one, when I try to run the
> configuration file I get the following error message:
> ./common/par_all27_prot_lipid_na.inp"
> even though the CHARM file is in the common directory.
> I would be very grateful for some help.
> Thanks
> Tiglath

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