Error exporting report to PDF

I have a report with embedded subreports for different departments. When I render a department with short subreports the report exports to PDF fine, but when I have a department with longer subreports then I get an error when exporting. Here is the tail end of the error message in the log file:

inetinfo!library!334!03/01/2006-16:08:30:: i INFO: Call to RenderNext( '/Budgeting/Department_Spending_Report' )
inetinfo!chunks!334!03/01/2006-16:08:30:: i INFO: ### GetReportChunk('RenderingInfo_PDF', 2), chunk was not found! this=a34ae82e-c4b2-4343-be6b-3989db988405
inetinfo!reportrendering!334!03/01/2006-16:08:32:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.WrapperReportRenderingException: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown., ;
Info: Microsoft.ReportingServices.ReportProcessing.WrapperReportRenderingException: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. > Microsoft.ReportingServices.ReportRendering.ReportRenderingException: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. > System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.Collections.ArrayList.get_Item(Int32 index)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemCollection.get_Item(Int32 index)
at Microsoft.ReportingServices.Rendering.ImageRenderer.Table.CalculateItemMeasurement(Orientation orientation, Double childrenMaximumDistance, ReAdjustments itemReAdjustment, ItemContext savedContext)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.RenderingItemContainer.CalculatePage(Orientation orientation, Boolean repeatableParent, Boolean canDelete, Double& minimumCoordinate, Double& distance)
at Microsoft.ReportingServices.Rendering.ImageRenderer.ImageRendererBase.ProcessPages(CompositionBase theComposition, Report theReport, Boolean needTotalPages, Int32 startPage, Int32 endPage, Boolean render)
at Microsoft.ReportingServices.Rendering.ImageRenderer.PdfReport.RenderReport(Report report, NameValueCollection deviceInfo, EvaluateHeaderFooterExpressions evaluateHeaderFooterExpressions, CreateAndRegisterStream createAndRegisterStreamCallback)
at Microsoft.ReportingServices.Rendering.ImageRenderer.ImageRendererBase.Render(Report report, NameValueCollection reportServerParameters, NameValueCollection deviceInfo, NameValueCollection clientCapabilities, EvaluateHeaderFooterExpressions evaluateHeaderFooterExpressions, CreateAndRegisterStream createAndRegisterStream)
End of inner exception stack trace
at Microsoft.ReportingServices.Rendering.ImageRenderer.ImageRendererBase.Render(Report report, NameValueCollection reportServerParameters, NameValueCollection deviceInfo, NameValueCollection clientCapabilities, EvaluateHeaderFooterExpressions evaluateHeaderFooterExpressions, CreateAndRegisterStream createAndRegisterStream)
at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RenderSnapshot(CreateReportChunk createChunkCallback, RenderingContext rc, GetResource getResourceCallback)
End of inner exception stack trace
inetinfo!webserver!334!03/01/2006-16:08:32:: e ERROR: Reporting Services error Microsoft.ReportingServices.ReportProcessing.WrapperReportRenderingException: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. > Microsoft.ReportingServices.ReportRendering.ReportRenderingException: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. > System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

I'm running Reporting Services SP2. I've searched other postings and I can't seem to find anyone else with the same issue. I'm able to export to excel with no problem.

Any help would be appreciated.

Thank You.

I'm sorry I don't have a solution for you. But I'm having the same problem producing a pdf. I have a report that has a subreport that has a subreport (three levels of reporting). I have verified that when no third level subreport is larger than one page, the pdf is created successfully. However, when any third level subreport extends beyond one page, a pdf cannot successfully be generated. The hourglass never goes away when trying to generate the pdf.

I'm hoping that someone who reads this may have a solution for both of us.

I have been working on this problem for several days, and I'm desparate.

Bob