Server Error in '/' Application. Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Source Error: Line 213: { Line 214: Metatag cur = new Metatag(); Line 215: cur.Content = m.Attributes["content"].Value; Line 216: if (m.Attributes["http-equiv"] != null) Line 217: { Source File: d:\www\metachecker.net\Site\Analise.aspx.cs Line: 215 Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] Analise.AnaliseMetatags(XhtmlDocument document) in d:\www\metachecker.net\Site\Analise.aspx.cs:215 Analise.Page_Load(Object sender, EventArgs e) in d:\www\metachecker.net\Site\Analise.aspx.cs:112 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +24 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +41 System.Web.UI.Control.OnLoad(EventArgs e) +131 System.Web.UI.Control.LoadRecursive() +65 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2427 Version Information: Microsoft .NET Framework Version:2.0.50727.5477; ASP.NET Version:2.0.50727.5483