Can anyone help me,since i am having problem to open safari browser, for the following S-RC code snippets...

public void setUp() {

selenium = new DefaultSelenium("localhost", 4444, "*safari C:/Program Files/Safari/Safari.exe","http://www.google.com");


i am currently using Selenium RC nightly build..., and getting the error, while trying the full code as...

Exception in thread "main" com.thoughtworks.selenium.SeleniumException: ERROR Server Exception: sessionId should not be null; has this session been started yet?
at com.thoughtworks.selenium.HttpCommandProcessor.doC ommand(HttpCommandProcessor.java:73)
at com.thoughtworks.selenium.DefaultSelenium.open(Def aultSelenium.java:234)
at GoogleTest.testGoogleTestSearch(GoogleTest.java:32 )
at GoogleTest.main(GoogleTest.java:19)

Many thanks in advance!