kiji-11, cukes w/ capybara - appears in browser as a problem with JS files not loading

gistfile1.rb

/Users/andy/.rvm/rubies/kiji-head/lib/ruby/1.8/uri/generic.rb:732:in `merge': stack level too deep (SystemStackError)
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/remote/http/common.rb:24:in `call'
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/remote/bridge.rb:476:in `raw_execute'
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/remote/bridge.rb:454:in `execute'
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/remote/bridge.rb:177:in `quit'
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/firefox/bridge.rb:40:in `quit'
        from /Users/andy/.rvm/gems/kiji-head/gems/selenium-webdriver-0.2.0/lib/selenium/webdriver/common/driver.rb:156:in `quit'
        from /Users/andy/.rvm/gems/kiji-head/gems/capybara-0.4.1.2/lib/capybara/driver/selenium_driver.rb:96:in `browser'
        from /Users/andy/.rvm/gems/kiji-head/gems/open4-1.0.1/lib/open4.rb:32
/Users/andy/.rvm/gems/kiji-head/gems/open4-1.0.1/lib/open4.rb:32:in `popen4': stack level too deep (SystemStackError)
        from /Users/andy/.rvm/gems/kiji-head/gems/open4-1.0.1/lib/open4.rb:23:in `fork'
        from /Users/andy/.rvm/gems/kiji-head/gems/open4-1.0.1/lib/open4.rb:23:in `popen4'
        from /Users/andy/.rvm/gems/kiji-head/gems/POpen4-0.1.4/lib/popen4.rb:75:in `popen4'
        from /Users/andy/.rvm/gems/kiji-head/gems/yui-compressor-0.9.6/lib/yui/compressor.rb:68:in `compress'
        from /Users/andy/.rvm/gems/kiji-head/gems/yui-compressor-0.9.6/lib/yui/compressor.rb:117:in `streamify'
        from /Users/andy/.rvm/gems/kiji-head/gems/yui-compressor-0.9.6/lib/yui/compressor.rb:66:in `compress'
        from /Users/andy/.rvm/gems/kiji-head/gems/jammit-0.6.0/lib/jammit/compressor.rb:72:in `compress_js'
        from /Users/andy/.rvm/gems/kiji-head/gems/jammit-0.6.0/lib/jammit/packager.rb:82:in `pack_javascripts'
         ... 49 levels...
        from /Users/andy/.rvm/rubies/kiji-head/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
        from /Users/andy/.rvm/rubies/kiji-head/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
        from /Users/andy/.rvm/rubies/kiji-head/lib/ruby/1.8/webrick/server.rb:162:in `start'
        from /Users/andy/.rvm/rubies/kiji-head/lib/ruby/1.8/webrick/server.rb:162