Thanks @RonBoyd, but that does not work, already tried! (After waiting for 30mins for the Save button to become active, which it never did, I gave up)
Problem is it cant authorise with fb or return an album list, even if you try to create a new album, it is not returned by facebook. As said, this has happened after an infamous Facebook Tuesday (4th June) night update.
This has worked, although not flawlessly, for months and only stopped working on Wed 5 June 2013 and others have reported the same problem on the sme day!
It's facebook that has changed and the LR plugin can no longer retrieve authorisation or album lists to update!