SSRS Not Responding ASSERT: Assertion Failed

Hi all

I am facing this prob with SSRS.
please sugges any solution.

Problem:

I have a few reports deployed on the report server.

When I click them I get the following error

An internal error occurred on the report server. See the error log for more details. (rsInternalError)

Checking the log file has the following entries

w3wp!processing!1!10/12/2007-17:02:12:: a ASSERT: Assertion failed! Call stack:
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RenderReport(IRenderingExtension renderer, DateTime executionTimeStamp, GetReportChunk getCompiledDefinitionCallback, ProcessingContext pc, RenderingContext rc, CreateReportChunk cacheDataCallback, Boolean& dataCached)
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RenderReport(DateTime executionTimeStamp, GetReportChunk getCompiledDefinitionCallback, ProcessingContext pc, RenderingContext rc)
Microsoft.ReportingServices.Library.RSService.RenderAsLive(CatalogItemContext reportContext, ItemProperties properties, ParameterInfoCollection effectiveParameters, Guid reportId, ClientRequest session, String description, ReportSnapshot intermediateSnapshot, DataSourceInfoCollection thisReportDataSources, Boolean cachingRequested, Boolean isLinkedReport, Warning[]& warnings, ReportSnapshot& resultSnapshotData, DateTime& executionDateTime, RuntimeDataSourceInfoCollection& alldataSources, UserProfileState& usedUserProfile)
Microsoft.ReportingServices.Library.RSService.RenderAsLiveOrSnapshot(CatalogItemContext reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters)
Microsoft.ReportingServices.Library.RSService.RenderFirst(CatalogItemContext reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames)
Microsoft.ReportingServices.Library.RenderFirstCancelableStep.Execute()
Microsoft.ReportingServices.Diagnostics.CancelablePhaseBase.ExecuteWrapper()
Microsoft.ReportingServices.Library.RenderFirstCancelableStep.RenderFirst(RSService rs, CatalogItemContext reportContext, ClientRequest session, JobType type, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames)
Microsoft.ReportingServices.Library.RenderReportAction.Render(String format, String deviceInfo)
Microsoft.ReportingServices.WebServer.ReportExecution2005Impl.InternalRender(String Format, String DeviceInfo, Stream& Result, String& Extension, String& MimeType, String& Encoding, Warning[]& Warnings, String[]& StreamIds)
Microsoft.ReportingServices.WebServer.ReportExecutionService.InternalRender(String Format, String DeviceInfo, Stream& Result, String& Extension, String& MimeType, String& Encoding, Warning[]& Warnings, String[]& StreamIds)
Microsoft.Reporting.WebForms.ServerReport.InternalRender(String format, String deviceInfo, String& extension, String& mimeType, String& encoding, String[]& streams, Warning[]& warnings)
Microsoft.Reporting.WebForms.ServerReport.Render(String format, String deviceInfo, NameValueCollection additionalParams, String& mimeType, String& extension)
Microsoft.Reporting.WebForms.ServerReportControlSource.RenderReport(String format, String deviceInfo, NameValueCollection additionalParams, String& mimeType, String& fileExtension)
Microsoft.Reporting.WebForms.ReportControlSource.RenderReportHTML4(String deviceInfo)
Microsoft.Reporting.WebForms.ReportControl.RenderReport(ReportControlSource controlSource, String instanceIdentifier, String navigationID, ZoomMode zoomMode, Int32 zoomPercent, Int32 pageNumber, String prefix, String searchText, String linkTarget, String replacementRoot, String alertMessage, Int32 searchStartPage, Boolean sizeToContent)
Microsoft.Reporting.WebForms.ReportAreaPage.OnPreRender(EventArgs e)
System.Web.UI.Control.PreRenderRecursiveInternal()
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
System.Web.UI.Page.ProcessRequest()
System.Web.UI.Page.ProcessRequest(HttpContext context)
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage)
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
System.Web.HttpServerUtility.Transfer(IHttpHandler handler, Boolean preserveForm)
Microsoft.Reporting.WebForms.ReportAreaPageOperation.PerformOperation(NameValueCollection urlQuery, HttpResponse response)
Microsoft.Reporting.WebForms.HttpHandler.ProcessRequest(HttpContext context)
System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
System.Web.HttpApplication.ResumeSteps(Exception error)
System.Web.HttpApplication.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)
System.Web.HttpRuntime.ProcessRequestNoDemand(HttpWorkerRequest wr)
System.Web.Hosting.ISAPIRuntime.ProcessRequest(IntPtr ecb, Int32 iWRType)

w3wp!library!1!10/12/2007-17:02:12:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details., un-named assertion fired for component processing;
Info: Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details.
w3wp!library!1!10/12/2007-17:02:15:: i INFO: Exception dumped to: C:apps_srvSQL 2005 Analysis ServicesMSSQL.2Reporting ServicesLogFiles flags= ReferencedMemory, AllThreads, SendToWatson



The reportserver also generates SQLDumper log file and a crash dump file

The report executes fine sometime and sometime gives the error mentioned above.
The reportserver at some point in time stopped doing anything.
I tried to delete those reports created I couldn€™t delete one report.
When I try to delete it takes a long time and says request timeout error.

Then I opened the web.config file of reportserver and report manager and just saved it so that the application reloads. And then it worked fine for few moments. I was also able to delete that report which was not getting deleted before. But after some time I again get the assertion failed error.

I have the same reports deployed in another server where they are working fine.
The database is SQL Server 2005 with SP2
How do it solve this problem