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ThreadStateException
O thread atual deve ser definido no modo STA (single thread apartment) antes que chamadas OLE possam ser feitas. Verifique se a função Main tem STAThreadAttribute marcado. A exceção somente será gerada se um depurador estiver anexado ao processo.

Source : System.Windows.Forms
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It sees the code below to solve the problem:

#region CodeArea(StrataFrame with Report Sharp-Shooter) in new Thread(STA)

private void inlineReportSlot2_RenderCompleted(object sender, EventArgs e)
{
    Thread newThread = new Thread(new ThreadStart(Exibe));
    newThread.SetApartmentState(ApartmentState.STA);
    newThread.Start();
}

void Exibe()
{
    Thread.Sleep(0);
    using (PerpetuumSoft.Reporting.View.PreviewForm previewForm = new PerpetuumSoft.Reporting.View.PreviewForm(inlineReportSlot2))
    {
        previewForm.WindowState = FormWindowState.Maximized;
        previewForm.ShowDialog();
    }
}

#endregion