From: Brittany Lott (
Date: Mon Mar 04 2019 - 20:24:54 CST

Hi all,

I am really excited to test out the new QwickMD plugin and am trying to work through the ubiquitin tutorial. I've encountered a big problem right at the beginning-I can't get QwikMD to load the PDB file!

I am running Windows 10 Enterprise and I just reinstalled VMD 1.9.3 and NAMD (not sure where to put it-I put it in the same University of Illinois folder in my Program Files (x86) that VMD was installed to) and I updated the PATH to include this location of NAMD. When I open QwikMD, I get a pop-up dialog box that tells me "The folder "qwikmd" will be created in your home directory to save user-defined MD simulation templates and residues topologies and parameters preferences. A file named qwikmd.rc will also be created to save this information."

However, the vmd.exe output reads the following line as soon as I open QwikMD:

vmd > ERROR) Creation of window for 'qwikmd' failed (can't create directory "P:/": no such file or directory).

Likewise, when I try to load the PDB file (either by entering the PDB id or by browsing on my computer to the downloaded file), I get another pop-up Application Error with the following message at the top:

can't read "env(QWIKMDFOLDER)": no such variable

I've tried to cwd in the Tk console before and after opening QwikMD to see if that affects anything, but with my limited abilities I can't figure out where the problem is. As far as I know, I've never had access to a P:/ drive on this computer (there are other networks I use at work, mostly cloud-based folders that sync to my machine over any wi-fi and occasionally a W:/ drive that I can only access on the local network at work) so I'm not sure how this P:/ directory thing came up. I apologize for my lengthy post, but can anyone shed any light on what my problem might be or how to get around it?

Thanks so much!

Brittany Lott, PhD
Upper School Chemistry Instructor
(704) 943-4704
Purdy Center 211<>


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