title: Selenium webdriver fails to start with Firefox 26+
body: <p>I was using selenium 2.35 with previous versions of firefox before it got updated to version firefox 26.0.My tests were running fine previously but now I end up getting the following error.</p>
  
  <pre><code> 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
  </code></pre>
  
  <p>I tried to downgrade the version of firefox but am unable to get any previous versions from the mozilla site.</p>
  
  <p>I also tried all the selenium versions 2.36,2.37,2.38,2.39 but none of them seems to be compatible with firefox 26.0. There are errors in the code once I try to replace the selenium 2.35 with 2.36 to 2.39. These errors disappear when I replace again with 2.35.</p>
  
  <p>Can anybody help me with the compatible versions of Selenium and Firefox?</p>