You must publish at least one action to your Timeline using this action type. Review the documentation.
When I submit my action on Facebook Developers, it gives that error. I followed the instructions on your Wiki for getting the plugin to post to Timeline. The code is being called in the single.php
<span class=" AWD_facebook_custom_action" data-type-event="AWD_facebook_tracker" data-action="read" data-object="article" data-url="http://chicagophoenix.com/2012/03/29/garofalo-talks-lgbt-youth-health-advocacy-at-uic/" data-responsetext="" data-callbackjs=""></span>
But it isn't posting to my Timeline when I read the story. I'm assuming its because the action hasn't been submitted to Facebook for review, but I don't understand what the issue is.
Here is the Facebook linter, there are a couple of Open Graph errors: http://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fchicagophoenix.com%2F2012%2F03%2F29%2Fgarofalo-talks-lgbt-youth-health-advocacy-at-uic%2F