facebook connect, invite, etc missing
I'm struggling with creating a canvas app for facebook. I'm using 6.x-3.0-beta3.
I've enabled the Facebook Connect Login to [myapp] block, and I can see the title of the block, but the login button never appears.
I changed the default titles depending on if the user is anonymous, connected or registered - and the correct title displays in each case, but there is never a button. (I did see a button once, and I used it to approve the app - but never since - I've made sure I'm logged out of drupal and facebook).
I also have an invite block set up on a different page, and that is always empty as well.
I hope I'm not doing anything daft - but I have no idea what to do to get this working - any help would be appreciated.