Gem install error

error.sh

Using choices (0.2.0) from git://github.com/teambox/choices.git (at master) 
ArgumentError: invalid byte sequence in US-ASCII
An error occured while installing choices (0.2.0), and Bundler cannot continue.
Make sure that `gem install choices -v '0.2.0'` succeeds before bundling.
mrgando@gandogames:/var/www/teambox$ gem install choices -v '0.2.0'
Successfully installed choices-0.2.0
1 gem installed
mrgando@gandogames:/var/www/teambox$ bundle install
Fetching source index for http://rubygems.org/
Using rake (0.9.2) 
Using abstract (1.0.0) 
Using activesupport (3.0.3) 
Using builder (2.1.2) 
Using i18n (0.5.0) 
Using activemodel (3.0.3) 
Using erubis (2.6.6) 
Using rack (1.2.1) 
Using rack-mount (0.6.13) 
Using rack-test (0.5.6) 
Using tzinfo (0.3.24) 
Using actionpack (3.0.3) 
Using mime-types (1.16) 
Using polyglot (0.3.1) 
Using treetop (1.4.9) 
Using mail (2.2.13) 
Using actionmailer (3.0.3) 
Using arel (2.0.7) 
Using activerecord (3.0.3) 
Using activeresource (3.0.3) 
Using activesupport-i18n-patch (0.0.1) from git://github.com/teambox/activesupport-i18n-patch.git (at master) 
Using addressable (2.2.2) 
Using xml-simple (1.0.12) 
Using aws-s3 (0.6.2) 
Using coffee-script-source (1.0.0) 
Using coffee-script (2.1.1) 
Using barista (1.0.0) 
Using bundler (1.0.21) 
Using cancan (1.4.1) 
Using celerity (0.8.6) 
Using culerity (0.2.13) 
Using nokogiri (1.4.4) 
Using ffi (1.0.9) 
Using childprocess (0.2.2) 
Using json_pure (1.6.1) 
Using rubyzip (0.9.4) 
Using selenium-webdriver (2.6.0) 
Using xpath (0.1.2) 
Using capybara (0.4.0) 
Using cgi_multipart_eof_fix (2.5.0) 
Using hashie (0.4.0) 
Using choices (0.2.0) from git://github.com/teambox/choices.git (at master) 
ArgumentError: invalid byte sequence in US-ASCII
An error occured while installing choices (0.2.0), and Bundler cannot continue.
Make sure that `gem install choices -v '0.2.0'` succeeds before bundling.