Drop down not AutoPostBack'ing
<p>I have a dropdown with report names.  When a report is selected it loads a Crystal Report Viewer with the selected report.  In the development environment this works fine.  In production it doesn't seem like it's posting back.  Not sure if this is actually the problem but that's all I know to ask about at this point.</p>

<p>Here's the code that's supposed to be running when an item is selected:</p>

<pre><code>   protected void ReportDropDown_SelectedIndexChanged(object sender, EventArgs e)
    {
        MessagesTextBox.Text = "ReportDropDown Index Changed";
        try
        {
            var rptName = ReportDropDown.SelectedValue.ToString();
            MessagesTextBox.Text = rptName;

            if (!Data.Reports.ContainsKey(rptName))
            {
                CrystalReportViewer1.ReportSource = null;
                return;
            }

            var file = Data.Reports[rptName];

            if ((file ?? "") == "")
            {
                CrystalReportViewer1.ReportSource = null;
                return;
            }

            CrystalReportViewer1.ReportSource = file;
        }
        catch(Exception ex)
        {
            MessagesTextBox.Text = ex.Message;
            CrystalReportViewer1.ReportSource = null;
        }
    }
</code></pre>

<p>You'll notice I added a text box to track what's going on in this procedure.  Again, in development everything goes as expected.  But in production MessagesTextBox is never updated at all when a different dropdown value is selected.  As far as I can tell there are no errors and it just isn't posting back, but I can't figure out why not since autopostback is set to true.</p>
