GPlus Fatal Error

PHP Fatal error: Class ‘DOMDocument’ not found in /var/www/html/wp-content/plugins/jetpack/modules/gplus-authorship.php on line 66, referer: http://www.charlestonsw.com/mindset/news-and-info/

While surfing this URL I noticed my entire post content for my blog was gone:
http://www.charlestonsw.com/debugging-slp-with-debug-my-plugin/

Deactivated and deleted JetPack, removing all JetPack data.

As soon as I did this my blog posts came back showing all content.

Re-activated and got the error message in my HTTPD log files AFTER I connected JetPack to my WordPress account.

I did notice all my social connections where dropped during the deactivate/delete process so when I re-installed/connected they all came up empty EXCEPT Google Plus.

http://wordpress.org/plugins/jetpack/