Ruby: problem installing EventMachine under Windows 7

Question

I am trying to install the gem EventMachine on Windows 7 (using Ruby 1.9.2 with RubyInstaller) via bundle, but I get the following error. I also installed DevKit and it is w

Answer 1

Since I am using thin. In my gemfile I put:

gem "thin", "1.3.1"
gem "eventmachine", "1.0.0.rc.1"