AdRotator with Datasource

I am using the ADRotator control with Datasource and I am getting the following error.

Exception Details: System.Web.HttpException: Only one of AdvertisementFile, DataSource, or DataSourceID properties can be set on AdRotator 'AdRotator1'.

Line 12:     Public Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Line 13:         AdRotator1.DataSource = FetchPicsFromDB()
Line 14:         AdRotator1.DataBind()
Line 15:     End Sub
Line 16:

The code below is what I have currently.  Can anyone help understand what the problem may be and how to solve it?  Side note I am using VWD 2010 & 4.0 .Net Framework, I don't know if this is causing a problem.

HTML:

<form id="form1" runat="server">
        <div class="bannerdiv">
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
                ConnectionString="<%$ ConnectionStrings:IATDatabaseConnectionString %>" 
                SelectCommand="SELECT [ImgPath], [RedirectUrl], [AltText] FROM [PicBanner]"></asp:SqlDataSource>
            <asp:ScriptManager ID="ScriptManager1" runat="server"/>
            <asp:Timer ID="Timer1" Interval="2000" runat="server" />
            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
                </Triggers>
                <ContentTemplate>
                    <asp:AdRotator
                    id="AdRotator1"
                    runat="server" 
                    DataSourceID="SqlDataSource1"  
                    ImageUrlField="ImgPath" 
                    NavigateUrlField="RedirectUrl" 
                    AlternateTextField="AltText" 
                    Target="_blank"/>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>
    </form>

Code behind:   

 Public Category As String
    Dim rowsAffected As Integer
    Public dt As DataTable = New DataTable()
    
    Public Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        AdRotator1.DataSource = FetchPicsFromDB()
        AdRotator1.DataBind()
    End Sub

    Protected Function FetchPicsFromDB() As DataTable
        Dim myConnectionString As String
        Dim mQuery As String = "SELECT ImgPath, RedirectUrl, AltText FROM PicBanner"

        myConnectionString = "Data Source=Database Information"
        Dim da As New SqlDataAdapter(mQuery, myConnectionString)

        da.Fill(dt)
        FetchPicsFromDB = dt
    End Function

    Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        AdRotator1.DataSource = FetchPicsFromDB()
        AdRotator1.DataBind()
    End Sub

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