From: Axel Kohlmeyer (
Date: Sun Apr 05 2009 - 09:05:07 CDT

On Sun, 2009-04-05 at 09:02 +0100, Dan Lussier wrote:
> I just wanted to flag up a potential problem with the OS X intel
> binary of the most up to date version of VMD.


please be a little bit more precise. are you talking about the
release version 1.8.6 or one of the alpha test versions?

> I have tried downloading it a couple of times without success. When I

well, if you do the identical (=correct) steps, a computer should
produce identical results. so repeating the same thing without
modifications _should_ produce the same result. ;)
> try to mount the disk image I get an error warning that there is a
> problem and then once the disk image is mounted the app simply doesn't

well, _what_ is the problem that is being reported.
> run. If I try mounting and re-mounting the same disk image a second

the installation instructions say that you have to drag and
drop the application to an appropriate location. did you do that?

> time I get an error ("Incorrect codec" ) and can't even get it to mount.

hmm... that looks more like there is something misconfigured in your
machine rather than

> I only have a single Mac here so I can't try it on another machine but
> my hardware specs are fairly typical (if it is significant to the
> problem):

it is very unlikely that it is a hardware problem, but rather something
on the software side. whether this is pertaining to VMD or your setup,
that is very hard to determine.


> MacBook Pro
> 2 GB RAM
> 2.4 GHz Core 2 Duo
> OS X 10.5.6 fully updated
> Thanks,
> Dan

Axel Kohlmeyer
   Center for Molecular Modeling   --   University of Pennsylvania
Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
tel: 1-215-898-1582,  fax: 1-215-573-6233,  office-tel: 1-215-898-5425
If you make something idiot-proof, the universe creates a better idiot.