From: Axel Kohlmeyer (
Date: Wed May 23 2012 - 07:09:28 CDT

On Wed, May 23, 2012 at 6:37 AM, Eros Albertazzi <> wrote:
> I'd like to use vmd (binary downloaded) on my Ubuntu 12.04 box.
> I have tcl installed and I am aware of the "non-standard" setting of that
> system.
> Env variable TCLLIBPATH seems of no use. I launch, and I have not
> seen anything there about system tcl

VMD ships with its own bundled Tcl library.
the local Tcl installation would be ignored.
the error message would happen, if somehow
that installation of VMD was not done correctly
or got somehow corrupted.


> Any clue or ubuntu-faq?
> Would be better to use vmd on a different Linux distribution? Any reference
> to a supported system list?
> Regards.
> Info) VMD for LINUXAMD64, version 1.9.1 (February 1, 2012)
> Info)
> Info) Email questions and bug reports to
> Info) Please include this reference in published work using VMD:
> Info)    Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> Info)    Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> Info) -------------------------------------------------------------
> Info) Multithreading available, 2 CPUs detected.
> Info) Free system memory: 3284MB (83%)
> Info) VMDNOCUDA environment variable is set, CUDA support disabled.
> Info) Ignoring CUDA-capable GPUs used for display
> Info) No CUDA accelerator devices available.
> Warning) Detected X11 'Composite' extension: if incorrect display occurs
> Warning) try disabling this optional X server feature.
> Info) OpenGL renderer: Mesa DRI Intel(R) G41
> Info)   Full GLSL rendering mode is available.
> Info)   Textures: 2-D (8192x8192), 3-D (256x256x256), Multitexture (8)
> ERROR) Tcl startup error: Can't find a usable init.tcl in the following
> directories:
> ERROR)     /home/alb/vmd-1.9.1/scripts/tcl
> /home/alb/vmd-1.9.1/scripts/tcl8.5
> /Projects/johns/tcl/8.5.6/lib_LINUXAMD64/lib/tcl8.5 /home/alb/lib/tcl8.5
> /home/lib/tcl8.5 /home/alb/library /home/library /home/tcl8.5.6/library
> /tcl8.5.6/library
> ERROR) This probably means that Tcl wasn't installed properly.
> ERROR) Tk startup error: invalid command name "tcl_findLibrary"

Dr. Axel Kohlmeyer
College of Science and Technology
Temple University, Philadelphia PA, USA.