Data in DataSets, but error when trying to populate Crystal Report

Question

I have been in the process of making changes to a legacy application as described in this post.  [Error received on windows application|Error received on windows application]
I have changed the references from 10.0 to 10.2.  The application included references to CrystalDecisions.CrystalReports.Design, CrystalDecisions.Enterprise.Framework and CrystalDecisions.Enterprise.InfoStore which did not have a comparable version in 10.2, so for the moment I have removed them.
I have then tried to run the application (compiles fine) and run into this error:
A first chance exception of type 'System.Exception' occurred in CrystalDecisions.CrystalReports.Engine.dll
The code where it fails is here, when it is trying to load it into the report:
        private void SendDailyRentalDataToCrystal()
            crystalFailure = false;
            try
                crystalDailyRentalReport.Database.Tables["ReportParameters"].SetDataSource(dsDailyRentalParameters);
                crystalDailyRentalReport.Database.Tables["ReportData"].SetDataSource(dsDailyRentalData);
            catch
                crystalFailure = true;
                string error = "Unable to generate the Daily Rental Report.
                error += "There was a problem sending the data to Crystal Reports.";
                System.Windows.Forms.MessageBox.Show(error, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
The DataSet visualizers for dsDailyRentalParameters and for dsDailyRentalData both indicate that there is valid data being returned from SQL Server.  This code is part of a Win32 application developed using VS 2005 and the reports were originally developed using Crystal Reports 10.
Thanks for any help that you can provide.

Answer 1

Ludek-
It appears that during the course of trying to rectify the CR versioning issues that I had, I altered the functionality of the application.  This morning I reverted back to the previous version of my application and started over on the changes.  After all, I only had a couple small changes to make.
I now have a functioning application.  However, I am not sure exactly what the cause of the last issue that I was fighting or how to fix it.
Anyway, thanks much for the assistance that you provided.
Regards,
Scott