System.NullReferenceException: Object reference not set to an instance of an object. at EditorCategory_CategoryContainer.PreInitValues() at DOL.Netvolution.ExtenderModule.ViewManager.SetValuesForControl(Control& control, String controlName, HtmlControlBase parentModule, Object data) in c:\WORK\TFS\SoftwareLibraries\DOL.Netvolution.ExtenderModule\ViewManager.cs:line 110 at DOL.Netvolution.ExtenderModule.ViewManager.GetCacheKeyFromModule(String path, HtmlControlBase parentModule, Object data, CacheProperties& cacheprop) in c:\WORK\TFS\SoftwareLibraries\DOL.Netvolution.ExtenderModule\ViewManager.cs:line 35 at DOL.Netvolution.ExtenderModule.ModuleUserControl.get_IsCachable() in c:\WORK\TFS\SoftwareLibraries\DOL.Netvolution.ExtenderModule\ModuleUserControl.cs:line 133 at Netvolution.Site.Modules.HtmlControlBase.GetCachedContent() in C:\Netvolution.NET\netvolutionNet Dev\netvolution.NET\Netvolution\Site\Modules\HtmlControlBase.cs:line 1076 at Netvolution.Site.Modules.HtmlControlBase.BuildControls() in C:\Netvolution.NET\netvolutionNet Dev\netvolution.NET\Netvolution\Site\Modules\HtmlControlBase.cs:line 1306 at Netvolution.Site.Modules.HtmlControlBase.Initialize(Object sender, EventArgs args) in C:\Netvolution.NET\netvolutionNet Dev\netvolution.NET\Netvolution\Site\Modules\HtmlControlBase.cs:line 1360