Error when trying to run File Data reports

We are running NFR Engine 2.0.1.8, PosgreSQL 9.2.1, agent 2.0.1.18.
We are receiving the below error when trying to run File Data reports (date-age, owner detail, filename extension). A directory data summary or permissions report run on the same volume works fine. We are receiving the same error when running against a Netware and OES2 server. File system data scans are running successfully.

Any ideas on what could be the issue?

Exception of type 'System.Web.HttpUnhandledException' was thrown.

Npgsql.NpgsqlException:
function owner_detail_report(integer, text) does not exist
Severity: ERROR
Code: 42883
Hint: No function matches the given name and argument types. You might need to add explicit type casts.
at Npgsql.NpgsqlState.<ProcessBackendResponses_Ver_3> d__a.MoveNext()
at Npgsql.ForwardsOnlyDataReader.GetNextResponseObjec t()
at Npgsql.ForwardsOnlyDataReader.GetNextRowDescriptio n()
at Npgsql.ForwardsOnlyDataReader.NextResult()
at Npgsql.ForwardsOnlyDataReader..ctor(IEnumerable`1 dataEnumeration, CommandBehavior behavior, NpgsqlCommand command, NotificationThreadBlock threadBlock, Boolean synchOnReadError)
at Npgsql.NpgsqlCommand.GetReader(CommandBehavior cb)
at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior cb)
at Npgsql.NpgsqlCommand.ExecuteDbDataReader(CommandBe havior behavior)
at SRS.DataAccessLayer.OwnerDetailReportAdapter.ReadD ata(List`1 lstData)
at SRS.DataAccessLayer.OwnerDetailReportAdapter.GetGe nericFileDataForScan2(Int32 reportid, String ownerIdList)
at SRS.Reports.FileSystem.OwnerDetailUnformattedRepor t.OnDataSourceDemanded(EventArgs e)
at DevExpress.XtraReports.UI.XtraReportBase.FillDataS ource()
at DevExpress.XtraReports.UI.XtraReport.FillDataSourc es()
at DevExpress.XtraReports.UI.XtraReport.OnBeforePrint (PrintEventArgs e)
at DevExpress.XtraReports.UI.XtraReport.CreateDocumen tCore(Single progressRange, Boolean buildPagesInBackground)
at DevExpress.XtraReports.Web.ReportViewer.ForcePSDoc ument()
at DevExpress.XtraReports.Web.BookmarkFiller`1.Fill(T parent)
at DevExpress.XtraReports.Web.ReportDocumentMap.FillD ocumentMap()
at DevExpress.XtraReports.Web.ReportDocumentMap.Ensur ePreRender()
at DevExpress.Web.ASPxClasses.ASPxWebControl.OnPreRen der(EventArgs e)
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)