Numerous errors at backend and no chatbar loading

[DParker]

Hi.
I've created a support ticked (nearly a day ago now), but no response...
At the backend, in Admin, I get these errors
Strict Standards: Only variables should be assigned by reference in /home/thegsn/public_html/arrowchat/includes/config.php on line 21

Strict Standards: Only variables should be assigned by reference in /home/thegsn/public_html/arrowchat/includes/integration.php on line 28

Notice: Undefined variable: error in /home/thegsn/public_html/arrowchat/admin/includes/functions/functions_login.php on line 62

Warning: Cannot modify header information - headers already sent by (output started at /home/thegsn/public_html/arrowchat/includes/config.php:21) in /home/thegsn/public_html/arrowchat/admin/includes/admin_init.php on line 171

Warning: Cannot modify header information - headers already sent by (output started at /home/thegsn/public_html/arrowchat/includes/config.php:21) in /home/thegsn/public_html/arrowchat/admin/includes/admin_init.php on line 172

Warning: Cannot modify header information - headers already sent by (output started at /home/thegsn/public_html/arrowchat/includes/config.php:21) in /home/thegsn/public_html/arrowchat/admin/includes/admin_init.php on line 173

Warning: Cannot modify header information - headers already sent by (output started at /home/thegsn/public_html/arrowchat/includes/config.php:21) in /home/thegsn/public_html/arrowchat/admin/includes/admin_init.php on line 193

additionally, on my site, the chat software doesn't load.
Running Joomla 3.3, PHP 5.4, EasySocial.
Any help appreciated.

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