From: Giacomo Fiorin (
Date: Fri Jan 26 2018 - 14:58:35 CST

Hi Michael, are you using Windows by any chance? VMD uses the Visual C++
compiler, which forbids some code from the Colvars module, therefore
Colvars is disabled by default on Windows VMD builds.


On Fri, Jan 26, 2018 at 3:11 PM, Michael Morin <>

> Hi,
> I can't find why I can't use colvars module with the VMD TkConsole? The
> commands "cv", "cd molid top" and "cv molid 0" all return "invalid command
> name "cv"". I'm using VMD 1.9.3 and Tcl8.5.6 / Tk8.5.6, and reinstalling
> didn't change anything.
> Thank you very much for your help
> Michael

Giacomo Fiorin
Associate Professor of Research, Temple University, Philadelphia, PA
Contractor, National Institutes of Health, Bethesda, MD