Can't run Jekyll with pygments

Question

I'm trying to run jekyll on my OS X, but get the error:

Configuration file: /Users/antonshuvalov/Desktop/largescalejs/_config.yml
            Source: /Users/antonshuvalov/Desktop/largescalejs
       Destination: /Users/antonshuvalov/Desktop/largescalejs/_site
      Generating... /Applications/Server.app/Contents/ServerRoot/usr/lib/ruby/Gems/1.9.1/gems/posix-spawn-0.3.8/lib/posix/spawn.rb:187: [BUG] Segmentation fault
ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

-- Crash Report log information --------------------------------------------
   See Crash Report log file under the one of following:
     * ~/Library/Logs/CrashReporter
     * /Library/Logs/CrashReporter
     * ~/Library/Logs/DiagnosticReports
     * /Library/Logs/DiagnosticReports
   the more detail of.

But if I push this blog on github, everything works fine