Open-ID not working

I have problem while i am going to apply open-id in my application.
It gives an Error of "uninitialized constant OpenID::Store"
I have added all require files and also added one open_url column in my
user table.
Please tell me that when openid_url is stored in table. and what the
Error says?

There’s a patch you need to apply to the plugin ( to make this work with the ruby-opend 2.x.x gem.