Richard Stockley :
The CuteChat2 support Session.
But there is a bug that , the page's constructor try to get the user identity , while the Session state is not a acquired .
(IHttpHandler constructor is before the asp.net step AcquireRequestState)
I will fix that as soon as possible .
(make sure the web.config contains <sessionState mode="InProc" />)
Regards , Terry .