IISExpress + VS.NET 2010 Get Server Error 500.19 when traceFailedRequests is enabled

Not sure what is wrong (maybe some new bits are busted) but if I add this in my web.config, the latest IISExpress with latest VS.NET web page always crashes with 500.19 =>

<tracing>

    <traceFailedRequests>

        <add path="*">

            <traceAreas>

                <add provider="ASP" verbosity="Verbose" />

                <add provider="ASPNET" areas="Infrastructure,Module,Page,AppServices" verbosity="Verbose" />

                <add provider="ISAPI Extension" verbosity="Verbose" />

                <add provider="WWW Server"

                areas="Authentication,Security,Filter,StaticFile,CGI,Compression,Cache,RequestNotifications,Module"

                verbosity="Verbose" />

            </traceAreas>

            <failureDefinitions statusCodes="400-599" />

        </add>

    </traceFailedRequests>

</tracing>

Matt