System.NullReferenceException: Object reference not set to an instance of an object. at Umbraco.Web.PublishedContentExtensions.GetPropertyValue[T](IPublishedContent content, String alias, Boolean recurse, Boolean withDefaultValue, T defaultValue) at Umbraco.Web.PublishedContentExtensions.GetPropertyValue[T](IPublishedContent content, String alias) at Navigation_Main.Page_Load(Object sender, EventArgs e) in D:\websites\Staging-Sites\NAHU-Vision\www\UserControls\Navigation_Main.ascx.vb:line 44








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Error: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource) at System.Collections.Generic.List`1.get_Item(Int32 index) at blEvents.selectAllEvents(UInt16 _getTopNumber, Boolean _getEventLocation, Boolean _getContactInfo, String _catagory, Int32 _calendar) in D:\websites\Staging-Sites\NAHU-Vision\www\App_Code\DataLayer\BusinessLayer\blEvents.vb:line 42