Fix error in DNN module

Get housemenu2 to work with DNN 5. Now when we have instsalled it gets and error asp error like there somthing wrong in the coding.: ## Deliverables This is the error we get when applying an skin with housemenu2. An error has occurred. [login to view URL]: Object reference not set to an instance of an object. ---> [login to view URL]: Object reference not set to an instance of an object. at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at ASP.portals_0_skins_troms09_default_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter output) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at ASP.default_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) at [login to view URL](HtmlTextWriter writer, ICollection children) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer, ControlAdapter adapter) at [login to view URL](HtmlTextWriter writer) at [login to view URL](Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---