Export Contacts/Address book from Windows Live Webmail

Hi

I have a Windows Live email with address xxx@hotmail.com,
I only have access to it via the Web.

I am trying to export my contacts but when I go to People/Contacts/Export and
select All Contacts and CSV for the file type then select Export at the top of the page
the page just disappears a I am back on the contacts page.

What am I doing wrong?

Any help appreciated

Thanks

Daniel