しようとしている間：
WebDriver driver=new FirefoxDriver();
次のエラーが表示されます。
java.lang.NoSuchMethodError: org.openqa.selenium.Proxy.extractFrom(Lorg/openqa/selenium/Capabilities;)Lorg/openqa/selenium/Proxy;
at org.openqa.selenium.firefox.FirefoxDriver.dropCapabilities(FirefoxDriver.java:313)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:191)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:182)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:95)
この問題は、ubuntu の firefox が 32.0 バージョンに更新された直後に発生し、バージョン 28.0 をインストールしようとしましたが、それでも機能しませんでした。
何か案は？前もって感謝します
curiosuが言ったようにドライバーのバージョンを 2.39 に変更した後、新しいエラーが表示されます。
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
pp-system-share:{2e1445b0-2682-11e1-bfc2-0800200c9a66} visible
1409862347400 DeferredSave.extensions.json DEBUG Save changes
1409862347400 DeferredSave.extensions.json DEBUG Save changes
1409862347405 addons.xpi DEBUG Updating database with changes to installed add-ons
1409862347405 addons.xpi-utils DEBUG Updating add-on states
1409862347406 addons.xpi-utils DEBUG Writing add-ons list
1409862347407 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1409862347408 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1409862347408 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-ar@firefox.mozilla.org.xpi
1409862348534 DeferredSave.extensions.json DEBUG Starting timer
1409862348581 addons.manager DEBUG shutdown
1409862348587 DeferredSave.extensions.json DEBUG Starting write
1409862348587 addons.xpi DEBUG shutdown
1409862348588 addons.xpi-utils DEBUG shutdown
1409862348644 DeferredSave.extensions.json DEBUG Write succeeded
1409862348644 addons.xpi-utils DEBUG XPI Database saved, setting schema version preference to 16
1409862348645 addons.xpi DEBUG Notifying XPI shutdown observers
1409862348649 addons.manager DEBUG Async provider shutdown done
(process:3519): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
(firefox:3519): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised
(firefox:3519): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised
(firefox:3519): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised
(firefox:3519): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised
1409862349347 addons.manager DEBUG Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm: ["XPIProvider"]
1409862349349 addons.manager DEBUG Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm: ["LightweightThemeManager"]
1409862349352 addons.xpi DEBUG startup
1409862349354 addons.xpi INFO Mapping ubufox@ubuntu.com to /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/ubufox@ubuntu.com
1409862349354 addons.xpi INFO Mapping {2e1445b0-2682-11e1-bfc2-0800200c9a66} to /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{2e1445b0-2682-11e1-bfc2-0800200c9a66}
1409862349355 addons.xpi INFO Mapping langpack-en-ZA@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1409862349355 addons.xpi INFO Mapping langpack-en-GB@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1409862349355 addons.xpi INFO Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to /usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
1409862349355 addons.xpi INFO Mapping langpack-ar@firefox.mozilla.org to /usr/lib/firefox/browser/extensions/langpack-ar@firefox.mozilla.org.xpi
1409862349356 addons.xpi DEBUG Ignoring file entry whose name is not a valid add-on ID: /tmp/anonymous3480147629030289426webdriver-profile/extensions/webdriver-staging
1409862349356 addons.xpi INFO Mapping fxdriver@googlecode.com to /tmp/anonymous3480147629030289426webdriver-profile/extensions/fxdriver@googlecode.com
1409862349357 addons.xpi DEBUG checkForChanges
1409862349363 addons.xpi DEBUG No changes found
1409862349367 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-en-ZA@firefox.mozilla.org.xpi
1409862349367 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-en-GB@firefox.mozilla.org.xpi
1409862349368 addons.xpi DEBUG Registering manifest for /usr/lib/firefox/browser/extensions/langpack-ar@firefox.mozilla.org.xpi
*** Blocklist::_preloadBlocklistFile: blocklist is disabled
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 677: aUrl is undefined
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:118)
at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:250)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:112)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:195)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:190)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:99)
解決策: ようやく問題を解決できました。selenium webDriver のバージョンを 2.42.2 から 2.39.0 に変更し、firefox のバージョンを 32.0 から 28.0 にダウングレードしました。