Re: tutorial-l: Nanotubes tutorial - coorList(577) no such element

From: Jian Liu (
Date: Thu Feb 18 2010 - 04:09:25 CST

Dear Drew.

As far as I know, there are some bugs about TclForce commands (such as loadcoords,

loadforces and loadmasses) on NAMD2.7b1/2_windows. I suggest that you change you

computing platform to Linux or have a try with NAMD2.6_windows.

May It can help you.

Jian Liu

Master-degree graduate candidate majoring in Molecular Modelling

Outstanding Students and PhD. Wanted


----- Original Message -----

From: Drew buschhorn <>


Subject: namd-l: tutorial-l: Nanotubes tutorial - coorList(577) no such element

Date: 2010-2-18 14:45:24

Hello, ( cross posted to tutorial-l first, but it doesn't seem to be active )

Thanks for making NAMD and VMD avalible to the

public. I'm not using NAMD for actual research, so

please feel free to drop this into your low priority queue.

I’ve been attempting to complete the nanotubes tutorial:

However, in step 3.1: Submitting sim_short.conf,

I'm unable to submit my processing request. When I

execute the command, it begins processing, then the Tcl interpreter dies

 with the error:

TCL: can't read "coorList(577)": no such element in array.

I know a little bit of Tcl and have tried to investigate the

error myself, but with little success. The wiki and previous digests

also don't seem to have any similar reports.

I'm not quite sure how to proceed, so if anyone has any time

to give advice, I would appreciate it. I

have included my debug information below, and attached a log of my

attempt to run the command sequence described in 3.1.


Former Inorganic ChemistDebug info

OS: Windows Vista x64

NAMD version: Version 2.7b2 (2009-11-12) Win32

VMD version: Version 1.8.7 (2009-08-01) Win32 OpenGL

Nanotubes files version:

Note: I have been successful at running the same tutorial files using the NAMD linux binaries:

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