Hey Zane,

The reason why you hitting this error is because your Facebook app `publish_actions` user permission do not get approval from Facebook reviewer, so when your site user create a new post, the Facebook do not allow them to autopost to their Facebook user profile page.

I have temporary disabled this option `Allow Authors To Use Their Facebook Account` from your Easyblog Facebook autoposting configuration page, it should work fine now.

By the way, if you would like to allow your site user to have the permission autopost their post into their Facebook user profile page, you have to follow this documentation here and submit your app for review.
http://stackideas.com/docs/easyblog/administrators/autoposting/setting-up-facebook-app