tentofield

I have seen similar questions in the correct section but no-one is answering questions there so I'm asking here where there are so many kind, informed people. Since I updated Yahoo a few weeks ago I have been unable to look at my emails. Yahoo tells me they are there and I can see that they are there but they refuse to open. I can use Y!A perfectly well on everything else, just no emails. Is anyone else having this problem or does anyone know what can be done about it.