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Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/westerns/public_html/admin/index.php:1) in /home/westerns/public_html/admin/index.php on line 68

Warning: Cannot modify header information - headers already sent by (output started at /home/westerns/public_html/admin/index.php:1) in /home/westerns/public_html/admin/index.php on line 70

Hard to tell what's wrong without looking through the files themselves, but generally you see this sort of thing when there is errant whitespace at the beginning or end of a file, perhaps the config.php files.

As above, but it could be here:
output started at /home/westerns/public_html/admin/index.php:1