AjaxFileUpload Not firing the OnUploadComplete

I have a AjaxFileUpload control, that for some reason stopped triggering the OnUploadComplete. Here is what I have;

<asp:AjaxFileUpload ID="AjaxFileUpload1" runat="server" Width="500px" OnUploadComplete="File_Upload"
                MaximumNumberOfFiles="20" />

code behind;

Protected Sub File_Upload(ByVal sender As Object, ByVal e As AjaxFileUploadEventArgs)
        Dim filename = "Some_File"
        Dim strDestPath As String = MapPath("~/Documents/")
        Dim filetype As String = Path.GetExtension(e.FileName)
        Dim Count As Integer = 0
        Dim root As New DirectoryInfo(strDestPath)
        Dim listfiles As FileInfo() = root.GetFiles(filename + "-*.*")

        If listfiles.Length > 0 Then
            Count = listfiles.Length + 1
            Try
                AjaxFileUpload1.SaveAs(strDestPath + filename + "-" + Convert.ToString(Count) + filetype)
            Catch ex As Exception
            End Try
        Else
            Count = 1
            Try
                AjaxFileUpload1.SaveAs(strDestPath + filename + "-" + Convert.ToString(Count) + filetype)
            Catch ex As Exception
            End Try
        End If

    End Sub

Web.config;

<handlers>
      <add name="AjaxFileUploadHandler" verb="*" path="AjaxFileUploadHandler.axd" type="AjaxControlToolkit.AjaxFileUploadHandler, AjaxControlToolkit"/>
</handlers>

Master Form;

<form id="form1" runat="server" method="post" enctype="multipart/form-data">

It worked at one time, once. And it works on a test form I made, but for some reason I am not getting it to fire on this project. What am I missing here?