System.NullReferenceException: ContentTemplate cannot be null. at WebFormManager.WebFormControl.OnTemplateDocumentLoad() at WebFormManager.WebFormControl.b__2() at WebFormManager.ExtensionMethods.LazyLoad[T](T Check, Func`1 Load) in C:\Projects\Addons\WebFormManager\Nv4\src\WebFormManager.Core\ExtensionMethods.cs:line 111 at WebFormManager.WebFormControl.get_TemplateDocument() at WebFormManager.WebFormControl.OnConfigurationElementLoad() at WebFormManager.WebFormControl.b__0() at WebFormManager.ExtensionMethods.LazyLoad[T](T Check, Func`1 Load) in C:\Projects\Addons\WebFormManager\Nv4\src\WebFormManager.Core\ExtensionMethods.cs:line 111 at WebFormManager.WebFormControl.get_ConfigurationElement() at WebFormManager.WebFormControl.OnWebFormLoad() at WebFormManager.WebFormControl.b__3() at WebFormManager.ExtensionMethods.LazyLoad[T](T Check, Func`1 Load) in C:\Projects\Addons\WebFormManager\Nv4\src\WebFormManager.Core\ExtensionMethods.cs:line 111 at WebFormManager.WebFormControl.get_WebForm() at WebFormManager.WebFormControl.BuildControls() at Netvolution.Site.Modules.HtmlControlBase.Initialize(Object sender, EventArgs args) in C:\Netvolution.NET\netvolutionNet Dev\netvolution.NET\Netvolution\Site\Modules\HtmlControlBase.cs:line 1361