Exception Returned From Reporting Servicing

Hi, I'm got this unhandled exeption return from our reporting server and I don't know what it means or how I can ensure it doesn't happen again. We are using SQL Server 2005 and Reporting Services 2005 with .Net 2.0 (VS 2005) ASP.NET



any help appreciated



regards


Satvinder



Exception information: Exception typeoapException

Exception message: System.Web.Services.Protocols.SoapException: Execution 'l53cr2bl5ces523lsvet0s2y'
cannot be found ---> Microsoft.ReportingServices.Diagnostics.Utilities.ExecutionNotFoundException: Execution
'l53cr2bl5ces523lsvet0s2y' cannot be found
--- End of inner exception stack trace ---

at Microsoft.ReportingServices.WebServer.ReportExecutionService.GetExecutionInfo(ExecutionInfo_executionInfo)
Request information: Request URL: http://uat-WebSite/Reserved.ReportViewerWebControl.axd?ReportSession=l53cr2bl5ces523lsvet0s2y_ControlID=90412828-217e-4c47-a8b4-445adb99cf71_Culture=2057_UICulture=1033_ReportStack=1_OpType=SessionKeepAlive_Interval=454000

Request path: /Reserved.ReportViewerWebControl.axd User host address: 10.110.125.68
User: LONDON_UAT_SONASA Is authenticated: True Authentication Type: NTLM Thread
account name: LONDON_UAT Thread information: Thread ID: 10 Thread account
name: LONDON_UAT Is impersonating: False

Stack trace: at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage
message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.SqlServer.ReportingServices2005.Execution.ReportExecutionService.GetExecutionInfo()
at Microsoft.SqlServer.ReportingServices2005.Execution.RSExecutionConnection.GetExecutionInfo()
at Microsoft.Reporting.WebForms.ServerReport.TouchSession()
at Microsoft.Reporting.WebForms.SessionKeepAliveOperation.PerformOperation(NameValueCollection
urlQuery, HttpResponse response)
at Microsoft.Reporting.WebForms.HttpHandler.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean_ completedSynchronously)

Custom event details: "
App: E 'Mon Jun 04 16:58:34 2007': LONDONWEB - " An internal error occurred on the report server. See the
error log for more details. (rsInternalError) "
App: E 'Mon Jun 04 16:58:34 2007': LONDONWEB - " An internal error occurred on the report server. See the
error log for more details. (rsInternalError) "
Sys: E 'Mon Jun 04 16:58:37 2007': DCOM - " The application-specific permission settings do not grant
Local Activation permission for the COM Server application with CLSID {BA126AD1-2166-11D1-B1D0-00805FC1270E}
to the user LONDON_ABC_PROD_UAT SID (S-1-5-21-388395589-1927312763-1538882281-22140). This security
permission can be modified using the Component Services administrative tool. "