Crystal report showing error in server

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ASP.NET

VS2010

SQL-Server-2008R2

I have completed my project in visual studio 2010 ultimate and sql server 2008 r2 and its a web application.

I have crystal reports also in my project.

The path which i have given in my project is

protected void btnPrint_Click(object sender, EventArgs e)
    {
        //  ReportDocument rDoc = new ReportDocument();
        //rDoc.Load("C:/Users/SUDESHNA/Documents/Visual Studio 2010/Projects/Inventory/SoldCrystalReport.rpt");
        //rDoc.SetParameterValue("@Category", ddlCategory.SelectedValue);
        //rDoc.SetDatabaseLogon("sa", "gariahat");
        //this.crystalReportViewer.ReportSource = rDoc;
        //this.crystalReportViewer.DataBind();
        //this.crystalReportViewer.Focus();
        //rDoc.Refresh();
        //rDoc.PrintToPrinter(1, true, 0, 0);

        ReportDocument rDoc = new ReportDocument();
        PrintDialog dialog1 = new PrintDialog();
        rDoc.Load(Server.MapPath("~/SoldCrystalReport.rpt"));
        rDoc.SetParameterValue("@Category", ddlCategory.SelectedValue);
        rDoc.SetDatabaseLogon("sa", "gariahat");
        dialog1.AllowSomePages = true;
        dialog1.AllowPrintToFile = false;
        if (dialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            int copies = dialog1.PrinterSettings.Copies;
            int fromPage = dialog1.PrinterSettings.FromPage;
            int toPage = dialog1.PrinterSettings.ToPage;
            bool collate = dialog1.PrinterSettings.Collate;

            rDoc.PrintOptions.PrinterName = dialog1.PrinterSettings.PrinterName;
            rDoc.PrintToPrinter(copies, collate, fromPage, toPage);
        }
        rDoc.Dispose();
        dialog1.Dispose();

I have given Server.Mappath so that when it runs on server, it takes the path,

but at runtime, while clicking on print button i am getting the following error

Server Error in '/' Application.
--------------------------------------------------------------------------------


Unsupported Operation. A document processed by the JRC engine cannot be opened in the C++ stack. 
  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

 Exception Details: System.Runtime.InteropServices.COMException: Unsupported Operation. A document processed by the JRC engine cannot be opened in the C++ stack.

Source Error: 


 An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 



[COMException (0x80041811): Unsupported Operation. A document processed by the JRC engine cannot be opened in the C++ stack.]
   CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocumentClass.Open(Object& DocumentPath, Int32 Options) +0
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.Open(Object& DocumentPath, Int32 Options) +90
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +259

[CrystalReportsException: Load report failed.]
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +322
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename, OpenReportMethod openMethod, Int16 parentJob) +851
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename) +78
   SoldItems.btnPrint_Click(Object sender, EventArgs e) +63
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9752490
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +196
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724

Kindly please tell what changes i have to make in my code?
So that it runs in server?

Please kindly help as my project is already in live, but the error is coming in crystal report printing part

Thanks
Sudeshna