How to set FirefoxProfile with extensions for RemoteWebDriver?

Question

I need to run my WebDriver tests on RemoteWebDriver with Firefox profile loaded with extension. My current code is

DesiredCapabilities desiredCapabilities = new DesiredCapabilities();
desiredCapabilities = DesiredCapabilities.firefox();
File firebug = new File("firebug.xpi");
File netexpert = new File("netexpert.xpi");
try {
    firefoxProfile.addExtension(firebug);
    firefoxProfile.addExtension(netexpert);
} catch (IOException e) {}
desiredCapabilities.setCapability(FirefoxDriver.PROFILE, firefoxProfile);
RemoteWebDriver remoteWebDriver = new RemoteWebDriver(<<serverurl here>>, getDesiredCapabilities());

I get following error

org.openqa.selenium.remote.UnreachableBrowserException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure.
Build info: version: '2.32.0', revision: '6c40c187d01409a5dc3b7f8251859150c8af0bcb', time: '2013-04-09 10:39:28'
System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.7.5', java.version: '1.6.0_51'
Driver info: driver.version: RemoteWebDriver

I do not get any error when I don't set the Firefox Profile and the tests run fine.

EDIT: On Removing the netexpert.xpi the tests are running fine. My standalone test was running fine with FirefoxDriver(not RemoteWebDriver) with netexpert enabled in same fashion.

Answer 1

Worked after I changed

RemoteWebDriver remoteWebDriver = new RemoteWebDriver(<<serverurl here>>, getDesiredCapabilities());

to

WebDriver webDriver = new RemoteWebDriver(<<serverurl here>>, getDesiredCapabilities());