Ruby 1.9.1和Aptana Studio 3无法调试（Windows）

c:/Ruby191/lib/ruby/site_ruby/1.9.1/rubygems.rb:323:in `bin_path': can't find gem ruby-debug-ide ([">= 0"]) (Gem::GemNotFoundException)
    from <internal:gem_prelude>:346:in `method_missing'
    from c:/Ruby191/bin/rdebug-ide:19:in `<main>'

gem install ruby-debug-ide

Building native extensions.  This could take a while...
ERROR:  Error installing ruby-debug-ide:
        ERROR: Failed to build gem native extension.

c:/Ruby191/bin/ruby.exe mkrf_conf.rb
Building native extensions.  This could take a while...


Gem files will remain installed in c:/Ruby191/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16 for inspection.
Results logged to c:/Ruby191/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/ext/gem_make.out

C:/Ruby191/bin/ruby.exe mkrf_conf.rb
Building native extensions.  This could take a while...
Building native extensions.  This could take a while...