Mubi on the Boxee Box

I have just bought a Boxee box and want to watch Mubi films. I've opened and account with MUBI. Boxee tells me to go to boxee.tv/mubi to authorise the account. When I do this I get a "Click on AUTHORISE" message to access your MUBI account. When I do this I get a MUBI Europe Screen and an "Allow Boxee.tv access" message. When I click on "allow", I just get a blank screen (url is "http://www.boxee.tv/signup/connectcal..."

Any ideas? I've tried this several times. I'm logged in to both my Boxee.tv account and my MUBI account (email FrankKelleher@blueyonder.co.uk