Eddie I had a lot of trouble - I don't know if it made any difference but I also clicked on the bit under your email by your chosen photo that says `check this gravatar'. It then says wait five/ten minutes.
Then I went to my AB profile and it just said avatar inactive but I did Control F5 and a new line saying something like click box for avatar came up - but there was no box. Luckily Chuck had said in another thread that the box would be immediately before the C of click if it wasn't visible - so I clicked the invisible box and it worked.