Handle Is Invalid - when doing PrintToPrinter

Question

I have a program installed on maybe 150 computers in our company and randomly (maybe 3-4 times a week) I get the error below from some of these computers. As I said total of 3 to 4 times a week from the 500 odd times this code is run..
  <Message>The handle is invalid</Message>
- <StackTrace>
  <StackItem Method="System.Drawing.Printing.StandardPrintController.OnStartPrint(PrintDocument document, PrintEventArgs e)" LineNumber="-1" />
  <StackItem Method="System.Drawing.Printing.PrintController.Print(PrintDocument document)" LineNumber="-1" />
  <StackItem Method="System.Drawing.Printing.PrintDocument.Print()" LineNumber="-1" />
  <StackItem Method="CrystalDecisions.CrystalReports.Engine.FormatEngine.PrintToPrinter(Int32 nCopies, Boolean collated, Int32 startPageN, Int32 endPageN)" LineNumber="-1" />
  <StackItem Method="CrystalDecisions.CrystalReports.Engine.ReportDocument.PrintToPrinter(Int32 nCopies, Boolean collated, Int32 startPageN, Int32 endPageN)" LineNumber="-1" />
  <StackItem Method="MobilePhoneSales.AL.usrContractDetails.cmdSaveContract_Click(Object sender, EventArgs e) in Z:\SVN_Repos\MobilePhoneSales\MobilePhoneSales\AL\usrContractDetails.cs" LineNumber="511" />
  <StackItem Method="System.Windows.Forms.Control.OnClick(EventArgs e)" LineNumber="-1" />
  <StackItem Method="DevExpress.XtraEditors.BaseButton.OnClick(EventArgs e)" LineNumber="-1" />
  <StackItem Method="DevExpress.XtraEditors.BaseButton.OnMouseUp(MouseEventArgs e)" LineNumber="-1" />
  <StackItem Method="System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)" LineNumber="-1" />
  <StackItem Method="System.Windows.Forms.Control.WndProc(Message& m)" LineNumber="-1" />
  <StackItem Method="DevExpress.Utils.Controls.ControlBase.WndProc(Message& m)" LineNumber="-1" />
  <StackItem Method="System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)" LineNumber="-1" />
  <StackItem Method="System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)" LineNumber="-1" />
  <StackItem Method="System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)" LineNumber="-1" />
  </StackTrace>
I am running crystal reports version 12.02 and using .net 2.0, the error happens on the PrintToPrinter line of the code below.. Thanks for having a look any questions I will try and respond with as much detail as possible..
                    using (ReportDocument ZeroUpfrontContract = new AL.rptZeroUpfrontContract())
                        ZeroUpfrontContract.SetParameterValue("Header1", BL.HeaderRecord.m_HeaderLine1);
                        ZeroUpfrontContract.SetParameterValue("Header2", BL.HeaderRecord.m_HeaderLine2);
                        ZeroUpfrontContract.SetParameterValue("Header3", BL.HeaderRecord.m_HeaderLine3);
                        ZeroUpfrontContract.SetParameterValue("Header4", BL.HeaderRecord.m_HeaderLine4);
                        ZeroUpfrontContract.SetParameterValue("Header5", BL.HeaderRecord.m_HeaderLine5);
                        ZeroUpfrontContract.SetParameterValue("Stock_code", txtBarCode.Text.Length > 0 ? DL.Inventory.queryStockCode(txtBarCode.Text) : "");
                        ZeroUpfrontContract.SetParameterValue("descript", lblItemDescript.Text);
                        ZeroUpfrontContract.SetParameterValue("IMEI", txtIMEI.Text);
                        ZeroUpfrontContract.SetParameterValue("Comments", "Comments: " + txtComments.Text);
                        ZeroUpfrontContract.SetParameterValue("ContractDate", DateTime.Now);
                        ZeroUpfrontContract.SetParameterValue("CustName", currentCustomer.FirstName.Trim() + " " + currentCustomer.Surname.Trim());
                        ZeroUpfrontContract.SetParameterValue("DataPack", chkDataPlan.Checked ? cboDataPacks.Text : "Declined by customer, therefore Pay As You Go rates will be applicable.");
                        ZeroUpfrontContract.SetParameterValue("ETC", chkETC.Checked ? rdoETC.SelectedIndex == 0 ? "Cancellation fee of $" + txtETCValue.Text + " reoccuring for the next " + txtETCDuration.Text + " months."
                                                                                : "Cancellation fee of $" + txtETCValue.Text + " on next bill."
                        if (cboWarrantyCodes.SelectedIndex > -1)
                            ZeroUpfrontContract.SetParameterValue("Warranty", "1 Year Extended Warranty Included");
                        else
                            ZeroUpfrontContract.SetParameterValue("Warranty", "  ");
                        ZeroUpfrontContract.PrintToPrinter(2, false, 1, 999);

Answer 1

Make sure the printer driver you are using is correct for;
1) The printer type it's self
2) The OS
Your code does not show if you are using .Close and .Dispose on the report objects, but this would be highly recommended.
Make sure you are using SP1:
https://smpdl.sap-ag.de/~sapidp/012002523100006007872008E/crvs05sp1.exe
The above will update your dev computer and install new MSI file that you should use to deploy the SP 1 (SP1 will not install on runtime computers. Only the MSI will):
c:\program files\microsoft visual studio 8\sdk\v2.0\bootstrapper\packages\crystal reports\CRRedist2005_x86.msi
Ludek
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