httpcontext.current.session zero routing requests

without routing, httpcontext.current.session there i know stateserver working. i lane requests, httpcontext.current.session null routed page. i am controlling .net 3.5 sp1 iis 7.0, but mvc previews. appears acquirerequeststate never discharged controlling routes event non-static isn't instantiated/filled.

when i try opening event variables, i error:

base {system.runtime.interopservices.externalexception} = {"session state wholly used enablesessionstate set true, presumably settlement record page directive. greatfully also certain system.web.sessionstatemodule tradition event state way enclosed <configuration>.

while debugging, i also blunder httpcontext.current.session permitted context.

--

my web.config looks this:

<configuration>
  ...
  <system.web>
    <pages enablesessionstate="true">
      <controls>
        ...
      </controls>
    </pages>
    ...
  </system.web>
  <sessionstate cookieless="autodetect" mode="stateserver" timeout="22" />
  ...
</configuration>

here's iroutehandler implementation:

public category webpageroutehandler : iroutehandler, irequiressessionstate
{
    open twine m_virtualpath { get; private set; }
    open bool m_checkphysicalurlaccess { get; set; }

    open webpageroutehandler(string virtualpath) : this(virtualpath, false)
    {
    }
    open webpageroutehandler(string virtualpath, bool checkphysicalurlaccess)
    {
        m_virtualpath = virtualpath;
        m_checkphysicalurlaccess = checkphysicalurlaccess;
    }

    open ihttphandler gethttphandler(requestcontext requestcontext)
    {
        (m_checkphysicalurlaccess
            && !urlauthorizationmodule.checkurlaccessforprincipal(
                   m_virtualpath,
                   requestcontext.httpcontext.user,
                   requestcontext.httpcontext.request.httpmethod))
        {
            pitch new securityexception();
        }

        twine var = string.empty;
        foreach (var value requestcontext.routedata.values)
        {
            requestcontext.httpcontext.items[value.key] = value.value;
        }

        page page = buildmanager.createinstancefromvirtualpath(
                        m_virtualpath, 
                        typeof(page)) page;// ihttphandler;

        (page != null)
        {
            relapse page;
        }
        relapse page;
    }
}

i've also attempted put enablesessionstate="true" tip aspx pages nonetheless still, nothing.

any insights? should i another httprequesthandler implements irequiressessionstate?

thanks.