This is the second time that I''ve tried to install plugins where this error has occured. It only occurs when I use the -x flag. script/plugin install -x svn://cartographer.rubyforge.org/trunk/vendor/plugins/cartographer /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:675:in `method'': wrong number of arguments (0 for 1) (ArgumentError) from /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:675:in `determine_install_method'' from /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:690:in `parse!'' from /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:411:in `parse!'' from /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:427:in `parse!'' from /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/plugin.rb:823 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in `require__'' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in `require'' from /usr/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in `require'' from script/plugin:3 What is the problem?