Jekyll missing dependency: RedCloth

What happened to my Jekyll ?

OK, I Surrender.

After establishing local environment of GitHub Pages, I forked the repository of Tom Preston-Werner and built the project with Jekyll; but encountered one problem under the Windows 7 environment.

The current ruby platform versions:

ruby		2.0.0p598 [i386-mingw32]
gem			2.0.14
bundler		1.7.9
RedCloth	4.2.9

Always throw error, when build Jekyll and start server:

You are missing a library required for Textile. Please run:
  $ [sudo] gem install RedCloth
  Conversion error: Jekyll::Converters::Textile encountered an error converting '_posts/2008-11-17-b
logging-like-a-hacker.textile/#excerpt'.
  Conversion error: Missing dependency: RedCloth
			 ERROR: YOUR SITE COULD NOT BE BUILT:
					------------------------------------
					Missing dependency: RedCloth

However, turn to Linux, use RVM to manage Ruby and run jekyll build, there is no error occurred indeed and it works well to parse textile file. This is very weird and still don’t know why.

Click here to see the source code.