drush

Setting up my new(to me) Mac pro (2009), and as a dedicated drupal advocate/enthusiast/up-and-coming-guru, I've installed Drush, "Drush is a command line shell and scripting interface for Drupal, a veritable Swiss Army knife designed to make life easier for those of us who spend some of our working hours hacking away at the command prompt."

Problem is, after going through the README text file and installing it, trying to run it gave me the error "Could not start up."