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You should see something that looks like "Python 2.6.9" If you see Python 3.x, seek outside help to run an earlier version.  [http://www.python.org/download/releases/](http://www.python.org/download/releases/) [http://www.python.org/downloads/](http://www.python.org/downloads/)  After downloading and unpacking the program, SeqTrace is ready to go. SeqTrace must be launched from a Terminal window. For a refresher or introduction to the Terminal, see section 2. Move SeqTrace to your Applications folder.