Hi, Thanks for your replies. I also had some trouble with yaml on my Mac. I solved it by installing > py26-yaml: > > sudo port install py26-yaml > > I'm using python2.6 on OS X 10.6. > > Hope this helps! > > Gonçalo Cabrita > ISR University of Coimbra > Portugal > I installed py26-yaml and tried easy_install again..no luck same error. These problems are usually related to confusion between the version of > python that ships with Mac OS and the one that is installed by > Macports. For example, you might be installing yaml for one, and > running the other, which subsequently can't find it. So, I would > double-check to make sure you're installing yaml in the Macports > version of python 2.6 and running the same version. Try "sudo > python_select python26" if you haven't already, and try re-running > easy_install. Also, /opt/local/bin should appear in your path before > /usr/bin. Make sure you get /opt/local/bin/python when you run 'which > python' at a terminal. "which python" gives me /usr/bin/python and not "/opt/local/bin". How can I make it so that it looks at /opt/local/bin? Thanks, S. >