hi
plugin function "ProfileFormSent" not call in any file.
solve :
i put this event to file inc\users\user.ctrl.php after line 274:

if($user_tab == 'profile')
$Plugins->trigger_event( 'ProfileFormSent', array(
'User' => & $edited_User,
'newuser_firstname' => & $edited_User->firstname,
'newuser_lastname' => & $edited_User->lastname,
'newuser_nickname' => & $edited_User->nickname,
'newuser_locale' => & $edited_User->locale,
'newuser_url' => & $edited_User->url,
'newuser_email' => & $edited_User->email,
'newuser_allow_msgform' => & $edited_User->allow_msgform,
'newuser_notify' => & $edited_User->notify,
'newuser_showonline' => & $edited_User->showonline,
'newuser_gender' => & $edited_User->gender,
'pass1' => & $edited_User->pass,
'pass2' => & $edited_User->pass,
) );