The activestate website (for some reason I wanted to call it the activesite webstate) has an archive of the ppm mailing list. Perusing that reveals a ton of problems with ppm 3.0 and 3.1, so I expect it's broken. One of the posts includes a patch you could apply to try to work. They also suggest uninstalling and reinstalling. The list I'm talking about is here: http://aspn.activestate.com/ASPN/Mail/Browse/Threaded/ppm/1689481