file playing problem
 

hi i'm confused can anybody help?
i have been using limewire pro for about a year with no problems until a few weeks ago when limewire sent a message saying download a new version so i did but it turned out to be just basic. a few days ago i reinstalled my old pro version but now i can't play any avi videos in my library, windows media player doesn't start with the avi files just stays on the limewire page with no error messages or anything i have had no codec issues before?