i solved all problems!! here's my solution, maybe it's useful for someone.
first, i change to the site-packages dir and manual rm mpcp's egg, then re-install mpcp by run "easy_install -Z mpcp". second, i found this(http://tinyurl.com/9cc2q) and then tried to re-install cElementTree by remove manually and run "easy_install -Z -f http://www.turbogears.org/download/eggs/ cElementTree". i specified the link cause it couldn't work by default. last, i got a such traceback "importError: No module named py", then i got solution by http://tinyurl.com/7kfc7, and TurboGears worked successfully!
