WordPress crashed after plugin update

Updated a few plugins and the site crashed afterwards. The plugins were: All In One SEO Pack, bbPress, BuddyPress,BuddyPress Activity Plus,Column Shortcodes, and Comment Images. At the time I was using wordpress 3.8.5.. All plugins said they were compatible. After updating these-which I should have done one at a time the site crashed so not really knowing what to do I updated Magento to newest version which looked as though the plugins were compatible up to that point except for the last two which I deactivated. I have deactivated each plugin one at a time to see if the site would come back but have had no luck. I get this message:

Fatal error: Uncaught exception ‘Zend_Controller_Response_Exception’ with message ‘Cannot send headers; headers already sent in /home/content/88/10983188/html/discussions/wp-content/plugins/all-in-one-seo-pack/aioseop_class.php, line 1273’ in /home/content/88/10983188/html/lib/Zend/Controller/Response/Abstract.php:321 Stack trace: #0 /home/content/88/10983188/html/lib/Zend/Controller/Response/Abstract.php(115): Zend_Controller_Response_Abstract->canSendHeaders(true) #1 /home/content/88/10983188/html/app/code/core/Mage/Core/Model/App.php(1246): Zend_Controller_Response_Abstract->setHeader(‘Content-Type’, ‘text/html; char…’) #2 /home/content/88/10983188/html/app/code/core/Mage/Core/Model/Cookie.php(93): Mage_Core_Model_App->getResponse() #3 /home/content/88/10983188/html/app/code/core/Mage/Core/Model/Cookie.php(209): Mage_Core_Model_Cookie->_getResponse() #4 /home/content/88/10983188/html/app/code/core/Mage/Core/Model/Cookie.php(260): Mage_Core_Model_Cookie->set(‘frontend’, ‘jcu0kuiti06b8ht…’, NULL, NULL, NULL, NULL, NU in /home/content/88/10983188/html/lib/Zend/Controller/Response/Abstract.php on line 321 –

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