SeleniumRCを使用してサファリを開こうとしています。ただし、Safariインスタンスが作成され、接続要求モードのままになります（SafariDriverがws：// localhost：3078 / wdで接続を要求します）。
require "selenium-webdriver"
caps = Selenium::WebDriver::Remote::Capabilities.safari
browser = Selenium::WebDriver.for :remote, :url=>"http://localhost:4444/wd/hub", :desired_capabilities=>caps
上記のものがハングアップし、次のように失敗します-Selenium :: WebDriver :: Error :: UnknownError：[リモートサーバー] com.google.common.base.Preconditions（Preconditions.java）からExecutorがまだ開始されていません（java.lang.IllegalStateException） ）：145：in checkState'
from [remote server] org.openqa.selenium.safari.SafariDriverCommandExecutor(SafariDriverCommandExecutor.java):123:inexecute'from [remote server] org.openqa.selenium.remote.RemoteWebDriver（RemoteWebDriver.java）：432：in execute'
from [remote server] org.openqa.selenium.remote.RemoteWebDriver(RemoteWebDriver.java):140:instartSession' from [remote server] org.openqa.selenium.remote.RemoteWebDriver（RemoteWebDriver.java ）：95：<init>'
from [remote server] org.openqa.selenium.safari.SafariDriver(SafariDriver.java):33:inin'from[リモートサーバー]sun.reflect.NativeConstructorAccessorImpl（NativeConstructorAccessorImpl.java）：-2：in newInstance0'
from [remote server] sun.reflect.NativeConstructorAccessorImpl(NativeConstructorAccessorImpl.java):39:innewInstance' from[リモートサーバー]sun.reflect.DelegatingConstructorAccessorImpl（DelegatingConstructorAccessorImpl.java）：27：in newInstance'
from [remote server] java.lang.reflect.Constructor(Constructor.java):513:innewInstance'from [リモートサーバー]java.lang.Class（Class.java）：355：innewInstance0'
from [remote server] java.lang.Class(Class.java):308:innewInstance'from [remote server] org.openqa.selenium.remote.server.DefaultDriverFactory（DefaultDriverFactory.java）：61：in callConstructor'
from [remote server] org.openqa.selenium.remote.server.DefaultDriverFactory(DefaultDriverFactory.java):52:innewInstance' from [remote server] org.openqa.selenium.remote.server.DefaultSession $ BrowserCreator（DefaultSession。 java）：197：in call'
from [remote server] org.openqa.selenium.remote.server.DefaultSession$BrowserCreator(DefaultSession.java):1:incall'... 4 level ... from [remote server] java.util.concurrent.ThreadPoolExecutor $ Worker（ThreadPoolExecutor.java）：908：in run'
from [remote server] java.lang.Thread(Thread.java):680:inrun' from /Users/demo/.rvm/ gems / ruby-1.9.2-p180 / gems / selenium-webdriver-2.24.0 / lib / selenium / webdriver / remote / response.rb：52：in assert_ok'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/response.rb:15:ininitialize'from /Users/demo/.rvm/gems/ruby- 1.9.2-p180 / gems / selenium-webdriver-2.24.0 / lib / selenium / webdriver / remote / http / common.rb：59：innew'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/http/common.rb:59:increate_response'from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/http/default.rb:59:in request'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/http/common.rb:40:incall' from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/bridge.rb:598:in raw_execute'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/remote/bridge.rb:92:increate_session'from / Users / demo / .rvm / gems / ruby-1.9.2-p180 / gems / selenium-webdriver-2.24.0 / lib / selenium / webdriver / remote / bridge.rb：68：in initialize'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/common/driver.rb:33:innew'from /Users/demo/.rvm /gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver/common/driver.rb:33:in for'from for'
from /Users/demo/.rvm/gems/ruby-1.9.2-p180/gems/selenium-webdriver-2.24.0/lib/selenium/webdriver.rb:65:in（irb）：7