I\'m getting this error:
tests.IntegrationTests.Selenium.RegisterAndLogin (TestFixtureSetUp): SetUp : OpenQA.Selenium.WebDriverException : Failed to start up
I found that running an older version of resharper (9.2) failed to work with the latest nunit and that caused selenium to timeout.
The temporary solution was to disable resharper (Tools -> Options -> Resharper -> Disable), the permanent solution is upgrading resharper.