Call Crystal Report on form + Invalid Report Sorce

I have created Crystal Report in VS 2005. Crystal Report is bound using the SQL Server. Report is working correctly, Report is displaying the results (Main Report Preview) .
I call the Crystal Report on form as follows : -

Code:

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Imports CrystalDecisions.CrystalReports.Engine

Public Class FrmCall_UserReport
    Private Sub btnShowReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShowReport.Click
        Dim cryRpt As New RptUsers()
        cryRpt.Load("C:\Users\Sonia\Desktop\OnlineExamination\OnlineExamination\RptUsers.rpt")
        CrystalReportViewer1.ReportSource = cryRpt
    End Sub
End Class

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When I run the form, I am getting the Error on Button Click : -

Code:

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Invalid Report Source

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