DatagridView checkbox error

[Benniit]

Am using vb.net 2008 and sql2008 and I want to loop thru frmMovement.DataGridView1 and the checked rows shd get populated into frmMovementReceivedFiles.DataGridView2. But I used Cbool, Boolean.TryParse to convert the the checked value but I still get but still the error: "Conversion from string "" to type 'Boolean' is not valid"
The code is as follows. Or ss there anyway to loop thru the checkboxes and populate them in another DatagridView2?

 Dim ctr As Integer
        frmMovementReceivedFiles.DataGridView2.Rows.Clear()
        For ctr = 0 To frmMovement.DataGridView1.Rows.Count - 1
            If frmMovement.DataGridView1.Rows(ctr).Cells("Column1").Value = True Then
                frmMovementReceivedFiles.DataGridView2.Rows.Add( _
               frmMovement.DataGridView1.Rows(ctr).Cells(1).Value, _
                frmMovement.DataGridView1.Rows(ctr).Cells(2).Value, _
                frmMovement.DataGridView1.Rows(ctr).Cells(3).Value, _
                frmMovement.DataGridView1.Rows(ctr).Cells(4).Value)
            End If
        Next
        If frmMovementReceivedFiles.DataGridView2.RowCount > 0 Then
            frmMovementReceivedFiles.Show()
        End If

[tlhintoq]

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[tlhintoq]

error: "Conversion from string "" to type 'Boolean' is not valid"

If frmMovement.DataGridView1.Rows(ctr).Cells("Column1 ").Value = True

Are you sure this value isn't a string? I would put a breakpoint here and double check what the actual value is