Estou tentando executar o script wsdl2ruby.rb que acompanha a gem soap4r e obter os seguintes erros:

[ral@lap etc]$ ruby /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/bin/wsdl2ruby.rb
/usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/xsd/charset.rb:13: warning: variable $KCODE is no longer effective
/usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/soap/property.rb:68: warning: encoding option is ignored - u
/usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/soap/property.rb:69: warning: encoding option is ignored - u
/usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/soap/property.rb:70: warning: encoding option is ignored - u
/usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/xsd/xmlparser.rb:74:in `<top (required)>': XML processor module not found. (RuntimeError)
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/wsdl/xmlSchema/parser.rb:13:in `<top (required)>'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/wsdl/xmlSchema/importer.rb:11:in `<top (required)>'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/wsdl/importer.rb:9:in `<top (required)>'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/lib/wsdl/soap/wsdl2ruby.rb:11:in `<top (required)>'
    from <internal:lib/rubygems/custom_require>:33:in `require'
    from <internal:lib/rubygems/custom_require>:33:in `rescue in require'
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/soap4r-1.5.8/bin/wsdl2ruby.rb:5:in `<main>'

Tenho as seguintes gemas instaladas:

httpclient (2.2.0.1) minitest (1.6.0) rake (0.8.7) rdoc (2.5.8) soap4r (1.5.8)

Tentei instalar a jóia do analisador xml que falha com muitos erros:http: //pastie.org/182212

Alguém sabe qual é o problema? Esta é minha primeira vez tocando em Rub

soap4r é a melhor ferramenta para o trabalho de criação de um cliente de serviço web SOA

Muito obrigado