webdriver problem firefox

[Tim-Conrad]

There is a problem with the BurpCSJ extension:

I have installed the extension via the BApp Store and tried to crawl an URL but this error orcurred:

Crawljax Thread started
Setting exclusion for builder exit
Setting exclusion for builder signout
Setting exclusion for builder signoff
Setting exclusion for builder logoff
Setting exclusion for builder logout
11:57:06.064 [Thread-19] WARN  - No plugins loaded. There will be no output
com.google.inject.ProvisionException: Guice provision errors:

1) Error in custom provider, org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(/usr/bin/firefox) on port 7055; process output follows: 
null
Build info: version: '2.44.0', revision: '76d78cf323ce037c5f92db6c1bba601c2ac43ad8', time: '2014-10-23 13:11:40'
System info: host: 'kali', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.18.0-kali3-amd64', java.version: '1.7.0_79'
Driver info: driver.version: FirefoxDriver
  at com.crawljax.di.ConfigurationModule.configure(ConfigurationModule.java:47)
  while locating com.crawljax.browser.EmbeddedBrowser
    for parameter 0 at com.crawljax.core.CrawlerContext.<init>(CrawlerContext.java:32)
  while locating com.crawljax.core.CrawlerContext
    for parameter 0 at com.crawljax.core.Crawler.<init>(Crawler.java:73)
  while locating com.crawljax.core.Crawler
    for parameter 2 at com.crawljax.core.CrawlTaskConsumer.<init>(CrawlTaskConsumer.java:30)
  while locating com.crawljax.core.CrawlTaskConsumer

1 error
    at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:987)
    at com.crawljax.core.CrawlController.call(CrawlController.java:65)
    at com.crawljax.core.CrawljaxRunner.call(CrawljaxRunner.java:37)
    at malerisch.SetupCrawljax.Start(SetupCrawljax.java:257)
    at malerisch.StartCrawling$ThreadCrawljax.run(StartCrawling.java:43)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(/usr/bin/firefox) on port 7055; process output follows: 
null
Build info: version: '2.44.0', revision: '76d78cf323ce037c5f92db6c1bba601c2ac43ad8', time: '2014-10-23 13:11:40'
System info: host: 'kali', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.18.0-kali3-amd64', java.version: '1.7.0_79'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:134)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:246)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:114)
    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:99)
    at malerisch.SetupCrawljax$MyCustomBrowser.newFirefoxBrowser(SetupCrawljax.java:98)
    at malerisch.SetupCrawljax$MyCustomBrowser.get(SetupCrawljax.java:63)
    at malerisch.SetupCrawljax$MyCustomBrowser.get(SetupCrawljax.java:55)
    at com.google.inject.util.Providers$2.get(Providers.java:84)
    at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:40)
    at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
    at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
    at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:84)
    at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
    at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
    at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
    at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:84)
    at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
    at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
    at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
    at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:84)
    at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
    at com.google.inject.internal.InjectorImpl$4$1.call(InjectorImpl.java:978)
    at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024)
    at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:974)
    ... 5 more
Caused by: org.openqa.selenium.WebDriverException: java.lang.NullPointerException
Build info: version: '2.44.0', revision: '76d78cf323ce037c5f92db6c1bba601c2ac43ad8', time: '2014-10-23 13:11:40'
System info: host: 'kali', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.18.0-kali3-amd64', java.version: '1.7.0_79'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.internal.FileExtension.readIdFromInstallRdf(FileExtension.java:141)
    at org.openqa.selenium.firefox.internal.FileExtension.writeTo(FileExtension.java:60)
    at org.openqa.selenium.firefox.internal.ClasspathExtension.writeTo(ClasspathExtension.java:63)
    at org.openqa.selenium.firefox.FirefoxProfile.installExtensions(FirefoxProfile.java:425)
    at org.openqa.selenium.firefox.FirefoxProfile.layoutOnDisk(FirefoxProfile.java:403)
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:89)
    ... 31 more
Caused by: java.lang.NullPointerException
    at javax.xml.xpath.XPathFactoryFinder._newFactory(XPathFactoryFinder.java:220)
    at javax.xml.xpath.XPathFactoryFinder.newFactory(XPathFactoryFinder.java:141)
    at javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:182)
    at javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:96)
    at org.openqa.selenium.firefox.internal.FileExtension.readIdFromInstallRdf(FileExtension.java:99)
    ... 36 more

Setup:
Kali GNU/Linux 1.1.0
Java 1.7 Openjdk
Tested on Icewasle 31.5.3, Icewasle 31.6.0, Icewasle 31.7.0, Firefox 38.0.1
(all with a linked /usr/bin/firefox)

Do you have any idea how to solve it?