Craft files and DB out of sync
It looks like the database schema (at Craft version 2.6.2773) is ahead of the craft/app files on your file system (at Craft version 2.5.2763).

Since (I assume) you're not seeing any update info being logged in production around 2016-03-09 22:07:49 (from the dateUpdated column in the craft_info table), my guess is that someone updated the site/database locally, then restored the updated database to production with the older files still in place.