You seem to have changed the registration page Url form register.php to register2.php for some reason ( may be to prevent spam bot from registration ), but after a user registers the link sent to him to acivate account is http://rapbattles.com/forum/register.php?a=ver
which leads for a page that gives the following error
if you need help with this you can contact me , if you need help with spam bots registration you can also contact meError Encountered. Please go back to main forum page and try again
regards
kamal