Server Error in '/' Application.

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Line 435:        /// <remarks/>
Line 436:        public dsProduct EndGetProduct(System.IAsyncResult asyncResult) {
Line 437:            object[] results = this.EndInvoke(asyncResult);
Line 438:            return ((dsProduct)(results[0]));
Line 439:        }

[SoapException: Server was unable to process request. ---> Object reference not set to an instance of an object.]
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +551452
   System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult asyncResult) +101
   wsLocal.HelioLocalService.EndGetProduct(IAsyncResult asyncResult) in c:\WINNT\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\4c7dd5b3\7a41ad5f\App_WebReferences.xxnxqu4e.4.cs:437
   dsProductDisplay.LoadByItemGroup(String itemGroup) in e:\WebSites\HelioWebFront\App_Code\BusinessEntity\dsProductDisplay.cs:274
   bcProduct.LoadItemGroup(String itemGroup) in e:\WebSites\HelioWebFront\App_Code\BusinessComponent\bcProduct.cs:67
   ucGroupItem.Page_Load(Object sender, EventArgs e) in e:\WebSites\HelioWebFront\UserControl\ucGroupItem.ascx.cs:43
   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.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436