286023 Fix issues with MyBB - Errors

I have just moved a MyBB forum site from one domain .com to another domain .org I am now getting errors as below. I need someone to come in , clean it all up without changing too much of the configuration. Warning [2] Cannot modify header information - headers already sent by (output started at /home/earn1/public_html/inc/[login to view URL]) - Line: 3069 - File: inc/[login to view URL] PHP 5.2.6 (Linux) File Line Function [PHP] errorHandler->error /inc/[login to view URL] 3069 header /inc/[login to view URL] 719 my_setcookie /inc/[login to view URL] 199 session->load_guest /[login to view URL] 111 session->init /[login to view URL] 41 require_once You must have the following to bid on this project. Knowledge of MyBB forum software, php skills and feedback, I will not accept bids without feedback.