Мои проблемы при установке дебагеров в Ruby on Rails

При установке под XP ruby-debug
Ошибка:
C:\Documents and Settings\Admin>gem install ruby-debug
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing ruby-debug:
        ERROR: Failed to build gem native extension.

        C:/Ruby193/bin/ruby.exe extconf.rb
Can't handle 1.9.x yet
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Помогло:
gem install ruby-debug-base19x --pre

При установке ruby-debug-ide
Ошибка:
C:\Documents and Settings\Admin>gem install ruby-debug-ide
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing ruby-debug-ide:
        ERROR: Failed to build gem native extension.

        C:/Ruby193/bin/ruby.exe mkrf_conf.rb
Building native extensions.  This could take a while...


Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16 for inspection.
Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/ext/gem_make.out

Помогло:
gem install ruby-debug-ide --platform=ruby --pre