BuddyPress.org

I cannot for the life of me get the activation email to send. Can anyone please help? I’ve been working on this for over 12 hours straight now and am exhausted. Please help me! I’ve checked the box next to “allow anyone to register”, saved changes and installed the latest versions of “wordpress”, “buddypress”, “buddypress template pack” and “mail from” and it still won’t work. What else do I need to do?