I'm having this problem with nokogiri's gem:
Could not open library 'C:\Ruby187\lib\ruby\gems\1.8\gems\nokogiri-1.4.6-x86-mingw32\ext\nokogiri\libxml2.dll' : unknown
I read that I had to try the 1.5.0.beta3 version. However, when I run
C:\Users\t3en4>gem install nokogiri --pre
Fetching: nokogiri-1.5.0.beta.4.gem (100%)
ERROR: Error installing nokogiri:
The 'nokogiri' 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'
What should I do?