Running with Ruby 1.9.2
The IDE complains that The gem ruby-debug-base19x is required and offers to install it.
However, upon attempting to install it it displays the message
Failed to install gems. Following gems were not installed: C:/Program Files (x86)/JetBrains/RubyMine 3.2.4/rb/gems/ruby-debug-base19x-0.11.30.pre2.gem: Error installing ruby-debug-base19x-0.11.30.pre2.gem: The 'linecache19' native gem requires installed build tools. Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downloads' and follow the instructions at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit' C:/Program Files (x86)/JetBrains/RubyMine 3.2.4/rb/gems/ruby-debug-ide-0.4.17.beta8.gem: Error installing ruby-debug-ide-0.4.17.beta8.gem: The 'ruby-debug-ide' native gem requires installed build tools. Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downloads' and follow the instructions at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit' linecache19 (0.5.12): Error installing linecache19: The 'linecache19' native gem requires installed build tools. Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downloads' and follow the instructions at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'
I followed its advice to download the DevKit - but the DevKit upon attempting to install, said that it was already correctly installed as part of Ruby.
Any advice?