selenium Webdriver can't even execute the click() function -

i'm facing issue in using selenium webdriver. i'm beginner in selenium webdriver excuse me in advance. i've followed step step somme explanations creating simple webdriver test still not working. can i've added webdriver in project.

it seems it's because i'm using firefox 3.5.19 ... reason ? here code :

    import org.openqa.selenium.by; import org.openqa.selenium.webdriver; import org.openqa.selenium.firefox.firefoxdriver; import org.openqa.selenium.firefox.firefoxprofile;   public class jobserve {      /**      * @param args      **/     public static void main(string[] args) {         // todo auto-generated method stub         firefoxprofile profile = new firefoxprofile();         profile.setpreference("network.proxy.type", 1);         profile.setpreference("network.proxy.http", "proxyfam");         profile.setpreference("network.proxy.http_port", 8080);         webdriver driver = new firefoxdriver(profile);           driver.get("http://www.jobserve.com.au/homepage.aspx");         driver.findelement(by.xpath("html/body/form/div[4]/div[1]/div[12]/div[1]/div/div[1]/a[2]/span")).click();     }  } 

and here error log :

exception in thread "main" org.openqa.selenium.invalidelementstateexception: [exception... "component returned failure code: 0x80004003 (ns_error_invalid_pointer) [nsinativemouse.mousemove]"  nsresult: "0x80004003 (ns_error_invalid_pointer)"  location: "js frame :: file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js :: anonymous :: line 9839"  data: no] command duration or timeout: 62 milliseconds build info: version: '2.32.0', revision: '6c40c18', time: '2013-04-09 17:23:22' system info: os.name: 'windows xp', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0-openscg-build-24' session id: e3d70b9d-8b0e-4dca-80e0-6989d0e62497 driver info: org.openqa.selenium.firefox.firefoxdriver capabilities [{platform=xp, javascriptenabled=true, acceptsslcerts=true, browsername=firefox, rotatable=false, locationcontextenabled=true, version=3.5.19, cssselectorsenabled=true, handlesalerts=true, nativeevents=true, webstorageenabled=true, applicationcacheenabled=true, takesscreenshot=true}]     @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method)     @ sun.reflect.nativeconstructoraccessorimpl.newinstance(nativeconstructoraccessorimpl.java:57)     @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(delegatingconstructoraccessorimpl.java:45)     @ java.lang.reflect.constructor.newinstance(constructor.java:532)     @ org.openqa.selenium.remote.errorhandler.createthrowable(errorhandler.java:187)     @ org.openqa.selenium.remote.errorhandler.throwifresponsefailed(errorhandler.java:145)     @ org.openqa.selenium.remote.remotewebdriver.execute(remotewebdriver.java:554)     @ org.openqa.selenium.remote.remotewebelement.execute(remotewebelement.java:268)     @ org.openqa.selenium.remote.remotewebelement.click(remotewebelement.java:79)     @ jobserve.main(jobserve.java:22) caused by: org.openqa.selenium.remote.errorhandler$unknownserverexception: [exception... "component returned failure code: 0x80004003 (ns_error_invalid_pointer) [nsinativemouse.mousemove]"  nsresult: "0x80004003 (ns_error_invalid_pointer)"  location: "js frame :: file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js :: anonymous :: line 9839"  data: no] build info: version: '2.32.0', revision: '6c40c18', time: '2013-04-09 17:23:22' system info: os.name: 'windows xp', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0-openscg-build-24' driver info: driver.version: unknown     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:6891)     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:9848)     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:265)     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:10421)     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:10426)     @ <anonymous class>.<anonymous method>(file:///c:/docume~1/plegeard/locals~1/temp/anonymous1872429321029396376webdriver-profile/extensions/fxdriver@googlecode.com/components/command_processor.js:10366) 

does have ideas ?

thanks in advance.

to keep inform. use firefox 3.5.19 (due working constraints)

by downgrading selenium webdriver 2.32 2.28 it's working...

thks.