Need Advice - Selenium NUnit (nunit-console) Build Step Timeout Exception

I am trying to run an automated Selenium test, using NUnit as a Build Step in TeamCity 9.1.1. I first tried using the NUnit-Runner, but couldn't get any luck with that, so I installed NUnit 2.6.4 on the build server and am launching the test with the nunit-console command.

There are 3 steps in this build configuration. 1) NuGet Restore 2) MsBuild - Build 3) Run UI Tests. This is the third build step, the other 2 work fine. Here is the 'Custom Script' in my 3rd TeamCity build step:


cd "C:\Program Files (x86)\NUnit 2.6.4\bin"
nunit-console.exe /result:test-results.xml %teamcity.build.checkoutDir%/InboundMarketing.UITests/bin/Debug/InboundMarketing.UITests.dll


The funny thing is, if I remote into the build server, and execute 'nunit-console.exe /result:test-results.xml %teamcity.build.checkoutDir%/InboundMarketing.UITests/bin/Debug/InboundMarketing.UITests.dll' manually, firefox launches, and NUnit launches the selenium tests just fine. But when I try and integrate this with TeamCity, it just bombs. I am remoted into the build server, and I never see Firefox launch, or anything. Here is the error output in my Build Log:

Additionally, here is the NUnit test I'm trying to run. This is just a very simple test, to ensure the build server is going to run these, before I dig too deep into the actual coding of the UI Tests:

using System;
using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;

namespace InboundMarketing.UITests
{
    [TestFixture]
    public class BaseDriver
    {
        protected IWebDriver Driver;
        protected string InboundMarketingServer;
        protected string Username;
        protected string Password;

        [SetUp]
        public void Init()
        {
            InboundMarketingServer = "http://urlto.thesite.com/subsite";
            Username = "myusername";
            Password = "mypassword";

            
            var profile = new FirefoxProfile { AcceptUntrustedCertificates = true };
            Driver = new FirefoxDriver(profile);

            Driver.Manage().Timeouts().SetPageLoadTimeout(TimeSpan.FromMinutes(1));
            Driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromMinutes(1));
            Driver.Navigate().GoToUrl(InboundMarketingServer);
        }

        [Test]
        public void Login()
        {
            Driver.FindElement(By.Id("txtUserName")).SendKeys(Username);
            Driver.FindElement(By.Id("txtPassword")).SendKeys(Password);
            Driver.FindElement(By.Id("chkEula")).Click();
            Driver.FindElement(By.Id("Submit")).Click();

            Assert.AreEqual(Driver.Title, "Dashboard");
        }

        [TearDown]
        public void Cleanup()
        {
            Driver.Quit();
        }
    }
}