NoMethodError: undefined method `lstrip!' for {}:Hash on album.getinfo

[masterkain]

Please have a look at this:

Lastfm.new(yourkey, yoursecret).album.get_info('Vemoth', 'The Upcoming End')

NoMethodError: undefined method `lstrip!' for {}:Hash
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/bundler/gems/ruby-lastfm-33f2415100e3/lib/lastfm/method_category/album.rb:6:in `block in <class:Album>'
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/bundler/gems/ruby-lastfm-33f2415100e3/lib/lastfm/method_category/base.rb:29:in `call'
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/bundler/gems/ruby-lastfm-33f2415100e3/lib/lastfm/method_category/base.rb:29:in `block in __define_method'
  from (irb):2
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/gems/railties-3.2.3/lib/rails/commands/console.rb:47:in `start'
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/gems/railties-3.2.3/lib/rails/commands/console.rb:8:in `start'
  from /Users/kain/.rvm/gems/ruby-1.9.3-p125/gems/railties-3.2.3/lib/rails/commands.rb:41:in `<top (required)>'
  from script/rails:6:in `require'
  from script/rails:6:in `<main>'

This happens because the releasedate is {}:

lastfm.request('album.getInfo', { artist: 'Vemoth', album: 'The Upcoming End'})

 => #<Lastfm::Response:0x007fd5d1862460 @xml={"status"=>"ok", "album"=>{"name"=>"The Upcoming End", "artist"=>"Vemoth", "id"=>"75620491", "mbid"=>{}, "url"=>"http://www.last.fm/music/Vemoth/The+Upcoming+End", "releasedate"=>{}, "image"=>[{"size"=>"small", "content"=>"http://userserve-ak.last.fm/serve/34s/35151317.jpg"}, {"size"=>"medium", "content"=>"http://userserve-ak.last.fm/serve/64s/35151317.jpg"}, {"size"=>"large", "content"=>"http://userserve-ak.last.fm/serve/174s/35151317.jpg"}, {"size"=>"extralarge", "content"=>"http://userserve-ak.last.fm/serve/300x300/35151317.jpg"}, {"size"=>"mega", "content"=>"http://userserve-ak.last.fm/serve/_/35151317/The+Upcoming+End.jpg"}], "listeners"=>"242", "playcount"=>"4003", "tracks"=>{}, "toptags"=>{}}}>