Load two applications in the same port in iisexpress

I am trying to configure two mvc applications in iisexpress, the sites of the applicationhost.config file are shown like this:

    <sites>
        <site name="WebSite1" id="1" serverAutoStart="true">
            <application path="/">
                <virtualDirectory path="/Site1" physicalPath="%IIS_SITES_HOME%\WebSite1" />
            </application>
            <bindings>
                <binding protocol="http" bindingInformation=":8080:localhost" />
            </bindings>
        </site>
        <site name="Test1" id="6">
            <application path="/site1" applicationPool="Clr4IntegratedAppPool">
                <virtualDirectory path="/" physicalPath="C:\Users\TheRooster\Desktop\Sitios\Test1\Test1\Test1" />
            </application>
            <bindings>
                <binding protocol="http" bindingInformation="*:8000:localhost" />
            </bindings>
        </site>
        <site name="Test2" id="7">
            <application path="/site2" applicationPool="Clr4IntegratedAppPool">
                <virtualDirectory path="/" physicalPath="C:\Users\TheRooster\Desktop\Sitios\Test2\Test2\Test2" />
            </application>
            <bindings>
                <binding protocol="http" bindingInformation="*:8000:localhost" />
            </bindings>
        </site>
        <siteDefaults>
            <logFile logFormat="W3C" directory="%IIS_USER_HOME%\Logs" />
            <traceFailedRequestsLogging directory="%IIS_USER_HOME%\TraceLogFiles" enabled="true" maxLogFileSizeKB="1024" />
        </siteDefaults>
        <applicationDefaults applicationPool="Clr4IntegratedAppPool" />
        <virtualDirectoryDefaults allowSubDirConfig="true" />
    </sites>

The problem is that when I load either of the two applications I receive the following error in firefox :

Detailed error information:
IIS Web Core Module
Unknown notification
Controller Not determined yet
Error code 0x80070002
Configuration error Configuration path not recognized 'MACHINE/WEBROOT/ APPHOST/TEST1'
Configuration file
URL requested http://localhost:8000/site2/
Physical path
Login method Not yet determined
Login user Not determined yet
Request tracking directory C:\Users\TheRooster\Documents\IISExpress\TraceLogFiles\

or

Configuration error Configuration path not recognized 'MACHINE/WEBROOT/ APPHOST/TEST2'

The command I use to load everything is:

iisexpress.exe /apppool:Clr4IntegratedAppPool

How do I solve this problem?