Lots of Errors, Sudden

[Nieth]

We haven't changed anything, all of the sudden we tried accessing the ACP and all of these errrors came up, and won't let us log in.

Warning: Cannot modify header information - headers already sent by (output started at /home/aristo91/public_html/classes/class_cookies.php:112) in /home/aristo91/public_html/admincp/index.php on line 40

Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0


Admin CP Error Log:

[10-Dec-2012 13:54:25 America/New_York] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/aristo91/public_html/classes/class_cookies.php:112) in /home/aristo91/public_html/admincp/index.php on line 40

[10-Dec-2012 13:54:40 America/New_York] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/aristo91/public_html/classes/class_cookies.php:112) in /home/aristo91/public_html/admincp/index.php on line 40

[10-Dec-2012 13:54:45 America/New_York] PHP Fatal error: Uncaught exception 'Exception' with message 'Language var login_title does not exist.' in /home/aristo91/public_html/classes/class_language.php:20

Stack trace:

#0 /home/aristo91/public_html/admincp/index.php(27): Language->__get('login_title')
#1 /home/aristo91/public_html/admincp/index.php(112): AdminCP->prepareLogin()
#2 /home/aristo91/public_html/admincp/index.php(118): AdminCP::main()
#3 {main}
thrown in /home/aristo91/public_html/classes/class_language.php on line 20


If anyone can make any sense of this please let me know. We can't access our admin control panel.