From: Vermaas, Joshua (
Date: Fri Jan 26 2018 - 15:14:46 CST

Hi Michael,

Did you happen to compile VMD yourself? The only thing I can think of is that the module wasn't selected at compile-time, since it requires an extra flag. The precompiled versions of VMD distributed on the website all had the module enabled for the 1.9.3 version (maaaybe not the windows version. I never use it, and am blissfully ignorant of all its shortcomings), and should work straight out of the box. Another possibility is that you are accidentally using an older version of VMD since that is first in your path (which is how I used 1.9.1 last week!). In any event, more details are needed, like the operating system you are using and the installation method.


On 01/26/2018 02:08 PM, Michael Morin wrote:


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