From: Norman Geist (
Date: Tue Feb 03 2015 - 06:17:36 CST

1st of all this is a NAMD question, so it’s the wrong forum.


But you may want to try an absolute path starting with the drive letter.


Norman Geist.


From: [] On Behalf Of Daniel Möller
Sent: Tuesday, February 03, 2015 11:03 AM
To: 'Akshata Rudrapatna'; 'Vmd l'
Subject: AW: vmd-l: vmd-I: Fatal Error: Unable to Open CHARMM Parameter File




I know some other issues with Win7 and other programs, but if you start VMD as admin maybe it will work for you too.





Daniel Möller


Von: [] Im Auftrag von Akshata Rudrapatna
Gesendet: Dienstag, 3. Februar 2015 02:45
An: Vmd l
Betreff: vmd-l: vmd-I: Fatal Error: Unable to Open CHARMM Parameter File


Hello VMD Community,


I am new to the NAMD software, and have been working through the tutorials on the website. Unfortunately, I cannot seem to run the tutorial simulation.

When I run it in a Terminal window, I get the following message:


Processor 0 Exiting: Called CmiAbort

Reason: Fatal Error: Unable To Open CHARMM Parameter File ../common/par_all27 _prot_lipid.inp


I have tried editing the path in Environment Variables and downloading the file again from the website. I have also checked to make sure the path name is correct and the file is placed in the correct location. The configuration file is properly set-up, as well. I am using the software on a Windows 7 PC.


Does anyone have any suggestions or tips as to how to resolve this problem?

I appreciate your time and consideration.




Akshata Rudrapatna