BuddyPress.org

The plugin works fine on all my installations of the latest WordPress.

If your users are not able to leave a star rating, it is likely that you are having a Javascript conflict. Are you using a custom theme? Try reverting to the BuddyPress Default theme to see if the stars work that way. If so, then maybe I it someone else can help you to troubleshoot the theme.

I should make it an option in the future for admins to turn off the part of the plugin that requires star ratings.