Selenium webdriver无法启动Firefox 26+

我使用selenium 2.35与之前版本的firefox更新到版本firefox 26.0之前.我的测试以前运行正常,但现在我最终收到以下错误.

 org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
*** LOG addons.manager: Application has been upgraded
*** LOG addons.xpi: startup
*** LOG addons.xpi: Skipping unavailable install location app-system-local
*** LOG addons.xpi: Skipping unavailable install location app-system-share
*** LOG addons.xpi: Ignoring file entry whose name is not a valid add-on ID: C:\Users\VISHAL~1.SIN\AppData\Local\Temp\anonymous4627406201097696285webdriver-profile\extensions\webdriver-staging
*** LOG addons.xpi: checkForChanges
*** LOG addons.xpi-utils: Opening XPI database C:\Users\VISHAL~1.SIN\AppData\Local\Temp\anonymous4627406201097696285webdriver-profile\extensions.json
*** LOG addons.xpi: New add-on fxdriver@googlecode.com installed in app-profile
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
*** LOG addons.xpi-utils: Make addon app-profile:fxdriver@googlecode.com visible
*** LOG DeferredSave/extensions.json: Save changes
*** LOG DeferredSave/extensions.json: Save changes
*** LOG addons.xpi: New add-on {9F17B1A2-7317-49ef-BCB7-7BB47BDE10F8} installed in winreg-app-user
*** LOG addons.xpi-utils: Make addon winreg-app-user:{9F17B1A2-7317-49ef-BCB7-7BB47BDE10F8} visible
*** LOG DeferredSave/extensions.json: Save changes
*** LOG DeferredSave/extensions.json: Save changes
*** LOG addons.xpi: New add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} installed in app-global
*** LOG addons.xpi-utils: Make addon app-global:{972ce4c6-7e08-4474-a285-3208198ce6fd} visible
*** LOG DeferredSave/extensions.json: Save changes
*** LOG DeferredSave/extensions.json: Save changes
*** LOG addons.xpi: New add-on {9F17B1A2-7317-49ef-BCB7-7BB47BDE10F8} installed in winreg-app-global
*** LOG DeferredSave/extensions.json: Save changes
*** LOG addons.xpi: New add-on mgsusageagent@managesoft.com installed in winreg-app-global
*** LOG addons.xpi-utils: Make addon winreg-app-global:mgsusageagent@managesoft.com visible
*** LOG DeferredSave/extensions.json: Save changes
*** LOG DeferredSave/extensions.json: Save changes
*** LOG addons.xpi: Updating database with changes to installed add-ons
*** LOG addons.xpi-utils: Updating add-on states
*** LOG addons.xpi-utils: Writing add-ons list
*** LOG DeferredSave/extensions.json: Starting timer
*** LOG DeferredSave/extensions.json: Starting write
*** LOG DeferredSave/extensions.json: Write succeeded
*** LOG addons.xpi-utils: XPI Database saved, setting schema version preference to 15
*** LOG addons.manager: shutdown
*** LOG addons.xpi: shutdown
*** LOG addons.xpi-utils: shutdown
*** LOG addons.xpi: Notifying XPI shutdown observers
*** LOG addons.manager: Async provider shutdown done
*** LOG addons.xpi: startup
*** LOG addons.xpi: Skipping unavailable install location app-system-local
*** LOG addons.xpi: Skipping unavailable install location app-system-share
*** LOG addons.xpi: Ignoring file entry whose name is not a valid add-on ID: C:\Users\VISHAL~1.SIN\AppData\Local\Temp\anonymous4627406201097696285webdriver-profile\extensions\webdriver-staging
*** LOG addons.xpi: checkForChanges
*** LOG addons.xpi: No changes found
JavaScript error: chrome://browser/content/urlbarBindings.xml, line 654: aUrl is undefined

我试图降级firefox的版本,但无法从mozilla网站获得任何以前的版本.

我也尝试了所有的selenium版本2.36,2.37,2.38,2.39,但它们似乎都没有与firefox 26.0兼容.一旦我尝试用2.36到2.39替换selenium 2.35,代码中就会出现错误.当我再次使用2.35替换时,这些错误消失了.

任何人都可以帮助我使用Selenium和Firefox的兼容版本吗？