"No available cask" error for any cask I try to install

Well, I just updated my `brew` and installed `brew-cask` formula on my machine after a `brew tap phinze/cask` command. Then I did `brew cask install vagrant` to install Vagrant and it suddenly popped this out: `Error: No available cask for vagrant`. Trying to figure out what's wrong I noticed that it's failing for ANY cask, neither the `brew cask search` works. Am I missing any step? Shouldn't it work? My `brew cask doctor` output: ``` ==> OS X Version: 10.9.2 ==> Hardware Architecture: intel-64 ==> Ruby Version: 1.8.7-p358 ==> Ruby Path: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby ==> Homebrew Version: 0.9.5 ==> Homebrew Executable Path: /usr/local/bin/brew ==> Homebrew Cellar Path: /usr/local/Cellar ==> Homebrew-cask Version: 0.32.0 ==> Contents of $LOAD_PATH: /usr/local/Cellar/brew-cask/0.32.0/rubylib /usr/local/Library/Homebrew /usr/local/Library/Homebrew/vendor /Library/Ruby/Site/1.8 /Library/Ruby/Site/1.8/powerpc-darwin13.0 /Library/Ruby/Site/1.8/universal-darwin13.0 /Library/Ruby/Site /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/vendor_ruby/1.8 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/vendor_ruby/1.8/universal-darwin13.0 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/vendor_ruby /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/powerpc-darwin13.0 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin13.0 . ==> Contents of $RUBYLIB Environment Variable: nil ==> Contents of $RUBYOPT Environment Variable: nil ==> Contents of $RUBYPATH Environment Variable: nil ==> Contents of $RBENV_VERSION Environment Variable: nil ==> Contents of $GEM_HOME Environment Variable: nil ==> Contents of $GEM_PATH Environment Variable: nil ==> Contents of $BUNDLE_PATH Environment Variable: nil ==> Running As Privileged User: No ```