Open ID Install the ruby-openid gem to enable OpenID support

I have installed "sudo gem install ruby-openid" successfully then
installed the plugin.

"script/plugin install
http://svn.rubyonrails.org/rails/plugins/open_id_authentication/"

the error i get is "no such file to load -- openid/extensions/sreg"
and in the console "Install the ruby-openid gem to enable OpenID
support"

i'm using rails 2.0.2 and open-id 2.0.4.

in script/console "puts OpenID::VERSION" yeilds "2.0.4"

"puts OpenID::SRed" yeilds "nil"

yet when i "open
/opt/local/lib/ruby/gems/1.8/gems/ruby-openid-2.0.4/lib/openid/extensions"

i clearly see sreg.rb in the folder

a few people have mentioned the need to patch the plugin using
"http://dev.rubyonrails.org/ticket/10604" though I think this is only
for openid authentication plugin's that are pre 2.0, and i have no idea
how to implement the patch if i did indeed need it.

If anyone else had the same problem and fixed it, or if you need some
more info about my setup before you can help, then please let me know!!