I've been trying to publish to facebook via the plugin (that used to work fine) but for some reason it won't open the browser to authorize on facebook. The pop-up message with the facebook terms and condition pops up and when you click okay it just goes back to the publish page in lightroom and no browser launches.
I have a similar problem in Lightroom 5.6 on Mac OS 10.10.
I try to authorize facebook, but it just asks for an application ID.
I have tried closing browsers first.
I have tried removing current authorization for lightroom on facebook, then trying again.
No luck, just the same "Facebook Application ID" prompt.