can not work with wordpress 3

account.post("test","test page") , throw exception
Wordpress::HostError: Missing QuickPress on dashboard page or bad account.
    from /Library/Ruby/Gems/1.8/gems/wordpress-0.1.7/lib/wordpress.rb:53:in `post'
    from (irb):9

account.valid_user? is true and account.valid_login_page is true. 

Thanks
