You need to have the dependencies installed before you install this
gem on a new machine. The dependencies may be found here:
http://echi-converter.rubyforge.org/
Under requirements. There is also an installation screencast here:
http://www.screencast.com/t/lQQkIVkUZMr
In the specific case below, you are missing the Win32Service gem on
the machine(s) you are attempting to install and run on.