问题：当我运行测试时，我在命令提示符中收到以下消息
Started ChromeDriver
port=9515
version=21.0.1180.4
log=C:\Users\jhomer\Desktop\Workspace\WebAutomationTesting\Tests\chromedriver.log
然后 Chrome 启动，之后我收到一条 Windows 错误消息，指出 chromedriver 已停止工作。
附加信息：我最近刚从 mac (osx) 切换到 windows 7。我使用的是相同的 IDE (Aptana 3)，并且安装了相同的 gem：
addressable (2.2.8)
bigdecimal (1.1.0)
builder (3.0.0)
childprocess (0.3.2)
commonwatir (3.0.0)
ffi (1.0.11)
hoe (3.0.6)
io-console (0.3)
json (1.7.3, 1.5.4)
json_pure (1.7.3)
libwebsocket (0.1.3)
minitest (3.2.0, 3.1.0, 2.5.1
multi_json (1.3.6)
nokogiri (1.5.5 x86-mingw32)
rake (0.9.2.2)
rautomation (0.7.2)
rdoc (3.12, 3.9.4)
rubygems-update (1.8.24)
rubyzip (0.9.9)
s4t-utils (1.0.4)
selenium-webdriver (2.24.0)
user-choices (1.1.6.1)
watir (3.0.0)
watir-classic (3.0.0)
watir-webdriver (0.6.1)
win32-api (1.4.8 x86-mingw32)
win32-process (0.6.5)
windows-api (0.4.1)
windows-pr (1.2.1)
xml-simple (1.1.1)
我已经运行了 gem update、gem pristine --all，但都没有帮助。
** 更新 **
测试“完成”后我收到的提示错误如下：
所以在我使用你建议的版本之前，我收到了这个错误：
Error:
test_UserRoles(UserRolesTest):
Errno::ECONNREFUSED: No connection could be made because the target machine actively refused it. - connect(2)
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/http/default.rb:76:in `response_for'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/http/default.rb:38:in 'request'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/http/common.rb:40:in `call'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/bridge.rb:598:in 'raw_execute'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/bridge.rb:576:in `execute'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/remote/bridge.rb:189:in 'quit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/chrome/bridge.rb:48:in 'quit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.24.0/lib/selenium/w ebdriver/common/driver.rb:166:in `quit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/watir-webdriver-0.6.1/lib/watir-webdrive r/browser.rb:87:in 'close'
UserRolesTest.rb:48:in 'teardown'
让我知道您是否需要任何其他信息。
谢谢。