[Dismounted]

Find:

PHP Code:

$getnewestmember=$db->query_first("SELECT userid, username FROM " . TABLE_PREFIX . "user WHERE " . TABLE_PREFIX . "userid=$numbersmembers[max]"); 


Replace With:

PHP Code:

$getnewestmember=$db->query_first("SELECT userid, username FROM " . TABLE_PREFIX . "user WHERE userid=$numbersmembers[max]"); 


BTW, the code you have isn't very neat, although non-coders wouldn't care .