Esquema Salarial - Error en pantalla de detalle

Estoy migrando datos de incrementos desde Vhur. Ya se poblaron las tablas acc.inc_incrementos y acc.idr_incremento_detalle_rubros con sus catálogos. El Smartlist de esquemas salariales presenta los datos correctamente, pero cuando quiero ver el detalle de un registro, se presentan el encabezado y la situación anterior pero no la situación propuesta y se genera el siguiente error:

System.Web.HttpException (0x80004005): Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerWrapper'.
 ---> System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown.
 ---> System.NullReferenceException: Object reference not set to an instance of an object. 
 at ASP.areas_acciones_views_rubroincremento_rubrosincremento_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) 
 at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) 
 at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) 
 at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) 
 at System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer) 
 at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) 
 at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 
 at System.Web.UI.Page.HandleError(Exception e) 
 at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 
 at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 
 at System.Web.UI.Page.ProcessRequest() 
 at System.Web.UI.Page.ProcessRequest(HttpContext context) 
 at System.Web.Mvc.ViewPage.ProcessRequest(HttpContext context) 
 at System.Web.Mvc.ViewUserControl.ViewUserControlContainerPage.ProcessRequest(HttpContext context) 
 at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.<>c__DisplayClass4.<Wrap>b__3() 
 at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap[TResult](Func`1 func) 
 at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) 
 at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) 
 at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) 
 at System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) 
 at System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext) 
 at System.Web.Mvc.ViewUserControl.RenderView(ViewContext viewContext) 
 at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) 
 at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() 
 at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) 
 at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) 
 at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) 
 at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) 
 at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) 
 at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

Cual podrá ser el problema?