From: Joshua Adelman (jla65_at_pitt.edu)
Date: Fri Oct 16 2009 - 16:20:03 CDT

I am attempting to use the MDFF plugin that is available in the
development version of VMD. I downloaded VMD 1.8.8a1 for Intel-based
OSX machines from Biocore. As a side note, the disk image is named
properly, but for some reason the name of the vmd app is named 1.8.7
(when running VMD it displays the correct version number though).

After issuing the "require package mdff" commend (returns version
0.2), I attempt to build a simulated map using "mdff sim". When I
issue the tcl command, I get a pop-up window:
"Could not locate '/Applications/VMD'"

And then it asks if I'd like to identify the path. When I select the
VMD app, I get a warning that '/Application/VMD 1.8.8a1.app' is not
executable.

The mdff sim routine still runs, but it fails when it tries to make
use of volutil (I assume this is what it needs to identify the VMD app
in order to find it). I don't get any further error messages, but
basically it never completes the low-pass filtering step, because it
doesn't know where volutil lives.

Any suggestions would be most appreciated.

Josh