I tried to configure the jabber settings to enabled and entered some user data which exist already. it then tells me settings are updated successfully but at the top I get this:

[phpBB Debug] PHP Notice: in file /includes/functions_jabber.php on line 818: Undefined index: starttls

Warning: Cannot modify header information - headers already sent by (output started at D:\apache\xampp\htdocs\phpBB2\includes\functions.php:2836) in D:\apache\xampp\htdocs\phpBB2\adm\index.php on line 159

Warning: Cannot modify header information - headers already sent by (output started at D:\apache\xampp\htdocs\phpBB2\includes\functions.php:2836) in D:\apache\xampp\htdocs\phpBB2\adm\index.php on line 161

Warning: Cannot modify header information - headers already sent by (output started at D:\apache\xampp\htdocs\phpBB2\includes\functions.php:2836) in D:\apache\xampp\htdocs\phpBB2\adm\index.php on line 162

Warning: Cannot modify header information - headers already sent by (output started at D:\apache\xampp\htdocs\phpBB2\includes\functions.php:2836) in D:\apache\xampp\htdocs\phpBB2\adm\index.php on line 163

Using php 5 with the latest xampp