Server Error in '/' Application.

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Line 18:         List<SentAlertData> alerts = new List<SentAlertData>(AlertsFactory.GetActiveAlertBanners());
Line 19:         rtrAlertBanners.DataSource = alerts;
Line 20:         rtrAlertBanners.DataBind();
Line 21:     }
Line 22: }

[InvalidOperationException: Enumeration has either not started or has already finished.]
   System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +48
   System.Collections.Generic.Enumerator.System.Collections.IEnumerator.get_Current() +2651945
   ComponentArt.Web.UI.Rotator.CreateControlHierarchy(Boolean UseDataSource) +366
   ComponentArt.Web.UI.Rotator.OnDataBinding(EventArgs e) +70
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +206
   System.Web.UI.Control.DataBind() +12
   Controls_AlertBannerl.GetAlerts() in c:\webclients\Teaneck\www\Controls\AlertBannerl.ascx.cs:20
   Controls_AlertBannerl.Page_Load(Object sender, EventArgs e) in c:\webclients\Teaneck\www\Controls\AlertBannerl.ascx.cs:12
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +47
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436