Error in displaying Cascading Reports

Question

Hi,
I'm using ASP.NET 2.0 page to display reports from Crystal Reports Server XI R2.
I have trouble when displaying dynamic cascading reports in my web page:
I got this error message:
List of Values failure: fail to get values. [Cause of error: initializationEx SDKException:An error occurred at the server :
Not a valid logon token.]
The reports are displayed fine in Infoview.
Actually sometimes the cascading reports work fine in my web, but at most cases the error occurs.
The following code works fine when the report is not cascading type.
Code:
ReportApplicationServer.InfoStoreConnectionHelper helper = new ReportApplicationServer.InfoStoreConnectionHelper();
using (helper)
       CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocument doc = helper.GetClientDocumentByID(id);
       if (doc != null)
      {     doc.DatabaseController.LogonEx(ConfigurationManager.AppSettings["report_servername"], ConfigurationManager.AppSettings["report_dbname"],ConfigurationManager.AppSettings["report_username"],ConfigurationManager.AppSettings["report_password"]);
             crViewer.ReportSource = doc;
Variable id contains report id in repository and is passed from previous page and I put that code on Page_Load.
The following is stack trace:
[COMException (0x80004005): List of Values failure: fail to get values. [Cause of error: initializationEx SDKException:An error occurred at the server :
Not a valid logon token.
CrystalDecisions.ReportAppServer.Prompting.IPromptEngine.processPrompting(IPromptingFeedback feedback) +0
CrystalDecisions.ReportSource.EromReportSourceBase.DoParameterPrompting(PromptingRequestContext reqContext) +386
CrystalDecisions.Web.ReportAgentBase.ProcessPrompting(PromptingHTMLFeedback feedback) +80
CrystalDecisions.Web.CrystalReportViewerBase.OnParameterPrompt() +258
CrystalDecisions.Web.CrystalReportViewerBase.RaisePostBackEvent(String eventArgument) +39
CrystalDecisions.Web.CrystalReportViewer.RaisePostBackEvent(String eventArgument) +88
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +172
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4921
Please help me

Answer 1

Hi, thanks for your reply.
Actually my setting for Crystal Report Viewer in Infoview is Advanced DHTML Viewer.
I've tried to switch between Advanced DHTML viewer and normal DHTML viewer but everything is OK in Infoview.
I suspect if I need more than just calling LogonEx in my ASP.NET code for this case, but I have no reference.
Everything is fine for static and dynamic (non cascading) reports in my web.
Do you have any suggestion for this problem?