Andy:

 

Please try to modify the CuteSoft_Client/CuteEditor/Load.ashx

 

and change all content to :

 

<%@ WebHandler language="C#" class="MyLoadHandler" %>

public class MyLoadHandler : CuteEditor.LoadHandler , System.Web.SessionState.IRequiresSessionState
{
}

 

Hope this helps.

 

Regards , Terry .