I’ve got the plugin connected successfully via the API, I checked the cache permissions and both folder and file are 777, but for some reason it is only showing the timestamp and the paragraph area for the content is blank.
My feed on Facebook is typically private, I set up a public post but the widget only seems to be pulling from 1 week ago.
I upgraded to the latest release from 1.0.5 tonight and encountered this issue. In short the newer version seems to be attempting to show comments that you have made as well as posts. The comments aren’t displayed, just blank spaces.
I had a poke at the code and in the end gave up and rolled back to 1.0.5. If you need it you can download all the files from the WP SVN: