Could not instantiate class org.openqa.selenium.firefox.FirefoxDriver

[nehcy]

Hi,

This question might have been asked before, but I searched and couldn't find one, so I post it anyway please bear with me.

I recently started experiencing Thucydides/Serenity. 

• I started by creating a "net.thucydides:thucydides-jbehave-archetype" maven project, which defaulted to thucydides 0.9.268, in my Windows 8.1 machine
  
• I imported the project in eclipse and in Run Configuration set
• "clean deploy" goals
  
• in VM arguments: -Dwebdriver.firefox.driver="C:\Program Files\Mozilla Firefox\firefox.exe"

When run the test I got the errors:

• 54608 [pool-1-thread-1] ERROR net.thucydides.core.webdriver.WebDriverFacade - FAILED TO CREATE NEW WEBDRIVER_DRIVER INSTANCE class org.openqa.selenium.firefox.FirefoxDriver: Could not instantiate class org.openqa.selenium.firefox.FirefoxDriver
• net.thucydides.core.webdriver.UnsupportedDriverException: Could not instantiate class org.openqa.selenium.firefox.FirefoxDriver
• Caused by: org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(C:\Program Files\Mozilla Firefox\firefox.exe) on port 7055; 
  

Has this happened to anybody? what did I miss here?

thanks for help!

[John Smart]

Hi,

This sounds like an incompatiblity between your version of Firefox and the version of Selenium you are using. Try using the latest version of Serenity, which is bundled with the latest version of Selenium.

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[Jeff Jensen]

We've encountered this issue as John describes.  However, I've seen this error with two of my team members and it wasn't the version issue.  The first resolved only by a reinstall of FF.  The second resolved by adding FF to the path (this did not work for the first person).

[nehcy]

Jeff - 

I've just tried re-installing FF, which I used an older version 34 for the compatibility concern as John suggested, but the problem still lingers; when you said "adding FF to the path", what path do I add FF to?

much appreciated,

[Jeff Jensen]

System/OS path.  $PATH or %PATH%

[Alex Okrushko]

Make sure that selenium 2.45 or higher is used. There was a bug in FF https://code.google.com/p/selenium/issues/detail?id=8399

[nehcy]

Yeah, selenium 2.45 it is! I added the dependency in the pom:

    <dependency>

        <groupId>org.seleniumhq.selenium</groupId>

        <artifactId>selenium-firefox-driver</artifactId>

        <version>2.45.0</version>

    </dependency>

and it worked!