The problem is with the installer for the graphviz-2.24.0.pkg. It works on
Leopard but not Snow Leopard. The developers are aware of this problem and
are working on it. Actually, the person who works on the mac platform has
yet to obtain a copy of Snow Leopard, so it might be a wee bit before
anything is done.

One the plus side, those who maintain macports have made the necessary
modifications so that

sudo port install graphviz

will install graphviz properly, albeit in another location ("/opt/local/bin"
I believe). If you chose to install from the former (not macports), and it
fails on you...it will install almost all of graphviz. Rgraphviz will not
play nice with this!

On Mon, Sep 7, 2009 at 6:04 AM, Tony Chiang <tchiang@fhcrc.org> wrote:

> So I have a fresh install of Snow Leopard on my macbook. I have downloaded
> graphviz-2.24.pkg and when I try to install it, I get an installation error
> at the very end. Can anyone else using Snow Leopard reproduce this before I
> chase down what is going on? I mean I would like to know if this is an
> incompatibility with the latest graphviz and Snow Leopard or just something
> to do with my local system.
>

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