undefined method `comment_count' for YouTubeG

`eval': undefined method `comment_count' for
#<YouTubeG::Model::Video:0xcdd2668> (NoMethodError)

http://youtube-g.rubyforge.org/

in response object i checked i am not getting comment_count

I am also using view_count and it is coming in response. previously i
was getting comment_count but now getting error.

i am using Rails 3 and Ruby 1.9.2

gem version
youtube (0.8.6)
youtube-g (0.5.0)