can't create cookies in IE with Se 2.24.1 ?

stacktrace

org.openqa.selenium.WebDriverException: Unable to add cookie to page (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 93 milliseconds
Build info: version: '2.24.1', revision: '17205', time: '2012-06-19 17:28:14'
System info: os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0_31'
Driver info: driver.version: RemoteWebDriver
Session ID: 8a7b9bb5-d55e-4e37-985c-86e42b5041f8
Command duration or timeout: 331 milliseconds
Build info: version: '2.24.1', revision: '17205', time: '2012-06-19 16:53:24'
System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.7.4', java.version: '1.6.0_33'
Driver info: driver.version: RemoteWebDriver
Session ID: 431ce1dfc2cc4096892fdc68e4d8a5ef
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:188)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:472)
	at org.openqa.selenium.remote.RemoteWebDriver$RemoteWebDriverOptions.addCookie(RemoteWebDriver.java:527)
	at TestingSe2Sauce.testSauce(TestingSe2Sauce.java:35)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:76)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.openqa.selenium.WebDriverException: Unable to add cookie to page (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 93 milliseconds
Build info: version: '2.24.1', revision: '17205', time: '2012-06-19 17:28:14'
System info: os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.6.0_31'
Driver info: driver.version: RemoteWebDriver
Session ID: 8a7b9bb5-d55e-4e37-985c-86e42b5041f8
Build info: version: '2.24.1', revision: '17205', time: '2012-06-19 16:53:24'
System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.7.4', java.version: '1.6.0_33'
Driver info: driver.version: RemoteWebDriver
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:188)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:472)
	at org.openqa.selenium.remote.RemoteWebDriver$RemoteWebDriverOptions.addCookie(RemoteWebDriver.java:527)
	at org.openqa.selenium.support.events.EventFiringWebDriver$EventFiringOptions.addCookie(EventFiringWebDriver.java:498)
	at org.openqa.selenium.remote.server.handler.AddCookie.call(AddCookie.java:33)
	at org.openqa.selenium.remote.server.handler.AddCookie.call(AddCookie.java:1)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:150)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

TestingSe2Sauce.java

import junit.framework.TestCase;
import org.openqa.selenium.*;
import org.openqa.selenium.remote.*;
import java.net.URL;
import java.util.concurrent.TimeUnit;

public class TestingSe2Sauce extends TestCase {
    private WebDriver driver;

    public void setUp() throws Exception {
        DesiredCapabilities capabilities = DesiredCapabilities.internetExplorer();
        capabilities.setCapability("version", "8");
        capabilities.setCapability("platform", Platform.XP);
        capabilities.setCapability("name", "trying to add a cookie");

        // for saucelabs to choose latest
        capabilities.setCapability("selenium-version", "2.24.1");

        // 10.10.0.8 is my local IP for my remote Windows box that has 2.24.1 running
        this.driver = new RemoteWebDriver(
                                          // new URL("REDACTED-SAUCELABS-URL")
                                          new URL("http://10.10.0.8:4444/wd/hub"),
                                          capabilities);

        driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
    }

    public void testSauce() throws Exception {
        this.driver.get("http://saucelabs.com/test/guinea-pig");
        this.driver.get("http://saucelabs.com/test/guinea-pig");
        assertEquals("I am a page title - Sauce Labs", this.driver.getTitle());

        Thread.sleep(5000);
        Cookie cookie = new Cookie("key", "value");
        this.driver.manage().addCookie(cookie);
    }

    public void tearDown() throws Exception {
        this.driver.quit();
    }
}