[NullReferenceException: Object reference not set to an instance of an object.]
attivita_commerciali._Default.addCategoria(MenuItem parent, String idpadre) +403
attivita_commerciali._Default.creaMenu(String tipo) +1322
attivita_commerciali._Default.Page_Load(Object sender, EventArgs e) +1369
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
System.Web.UI.Control.OnLoad(EventArgs e) +97
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
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