How to use Rjb on Windows 7?

My OS is Windows 7.
My Ruby version is ruby 1.9.2p290 (2011-07-09) [i386-mingw32]

I have downloaded rjb-1.3.5-x86-mswin32-60.gem from RubyForge and
install it

  gem install rjb-1.3.5-x86-mswin32-60.gem --local

No error messages, the installation succeeded.

However, when I write in a script

  require 'rjb'

it doesn't work, the error messages are:

C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:926:in
`report_activate_error': RubyGem version error: rjb(1.3.5 not >= 0)
(Gem::LoadError)
  from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:244:in
`activate_dep'
  from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:236:in `activate'
  from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:213:in `rescue in
try_activate'
  from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:210:in
`try_activate'
  from <internal:gem_prelude>:218:in `try_activate'
  from <internal:lib/rubygems/custom_require>:32:in `rescue in require'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from y.rb:1:in `<main>'

How can I do?

Thank you!

···

--
Posted via http://www.ruby-forum.com/.

maybe compile it yourself?
http://rubyforge.org/pipermail/rjb-users/2009-September/000081.html

···

--
Posted via http://www.ruby-forum.com/.