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I am trying to run a crystal report from my web application which was built using ASP.NET 4.0 and Visual Studio 2010. I have installed the following from the SAP site ( http://www.businessobjects.com/jump/xi/crvs2010/us2_default.asp ) 1) SAP Crystal Reports, version for Visual Studio 2010 - Standard EXE installation package which installs the software into the Visual Studio IDE. 2) SAP Crystal Reports runtime engine for .NET Framework 4 (64-bit) I have a page called Reports.aspx in which I have a crystal report viewer control <CR:CrystalReportViewer ID="rptViewer" runat="server" AutoDataBind="true" /> In the Reports.aspx.cs file I have the following code: protected override void OnPreRender(EventArgs e) { ReportDocument report = new ReportDocument(); var path = Server.MapPath("Reports/Sample.rpt"); report.Load(path); report.SetDatabaseLogon("username", "password", "servername", "databasename"); rptViewer.ReportSource = report; } On the report.Load(path) line I get the following error: Unsupported Operation. A document processed by the JRC engine cannot be opened in the C++ stack. How can I fix this?

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