Print Crystal Report that uses a SQL stored procedure from C#, VS2008 -- log on problems

Using the code show here I am trying to print a Crystal Report (2011) from C#, VS2008.  When I use these techniques on a table-based report, things work fine.  The current report is based on a stored procedure and I get "Unable to connect.  Incorrect log on parameters" at the PrintToPrinter command.  I have given the stored proceure explict execute permissions for the cyrstal user.  This was necessary to even see the s/p in the Crystal designer interface.

When I preview the report in the Crystal interface, everything works fine.  I do get the log on dialogue.  Part of that is the database name, of course, so I tried setting that in my code, too, but that didn't work.

What am I doing wrong?

                
                ReportDocument rpt1 = new ReportDocument();
                rpt1.Load(@"E:\LabelsfromSP.rpt");

                //log on
                //MessageBox.Show("Logging on");
                TableLogOnInfo crTLogOnInfo = new TableLogOnInfo();
                ConnectionInfo crConnInfo = new ConnectionInfo();
                Tables crTables;

                crConnInfo.ServerName = "_DATA_ODBC"; // this is an odbc connection
                crConnInfo.UserID = "crystal";
                crConnInfo.Password = "crystal";

                MessageBox.Show("here1");

                crTables = rpt1.Database.Tables;

                foreach (Table crTable in crTables)
                {
                    crTLogOnInfo = crTable.LogOnInfo;
                    crTLogOnInfo.ConnectionInfo = crConnInfo;
                    crTable.ApplyLogOnInfo(crTLogOnInfo);
                }

                MessageBox.Show("here2");

                rpt1.SetParameterValue("@ordType", "O");
                MessageBox.Show("here2a");
                rpt1.SetParameterValue("@ordNumber","00274945");

                MessageBox.Show("here2b");
                rpt1.PrintOptions.PrinterName = "PA1-2";

                //for (int nl = 1; nl <= numlabels; nl++)
                //{
                MessageBox.Show("here3");
                rpt1.PrintToPrinter(1, true, 0, 0);
                //}

                ////last label
                //if (remaining != 0)
                //{
                //    rpt1.SetParameterValue("QtyPer", remaining);
                //    rpt1.PrintToPrinter(1, true, 0, 0);
                //}

                //rpt1.PrintToPrinter(1, true, 0, 0);

                rpt1.Close();