Yahoo Mail not working with Opera

[manic111]

When I try to open my Yahoo Mail, I can log in fine. It then goes to my front page. However, after that it redirects me to an error page that says

Ooops. Yahoo! Mail can't load

Loading Yahoo! Mail failed due to a client side error

You might try going into your firewall settings, and disabling "Ad blocking". If that doesn't work, please contact customer care

Yahoo Mail classic works fine, as does Yahoo Mail in other web browsers. It just seems to be Opera that is the problem. This is slightly odd as I had it working for a few months in Opera before it went wrong...