After installing epstool as you described bellow I was able to install octave by running
From: "bpabbott [via Octave]" <
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Date: Thursday, April 18, 2013 2:14 PM
To: Andrew Davidson <
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Subject: Re: How to install Octave on Mac Mountain Lion (OSX 10.8.3)
You might try installing each of the dependencies one at a time to determine which one is producing the problem. Sometimes, the problem is that a port needs to be "cleaned". For example, if epstool won't install, you can try cleaning and then attempt the install again.
sudo port clean epstool
sudo port install epstool
Ben