Hi. I have problem with add string resource in nop 2.1 - slovak translation . Do you know where could be the problem? I deleted data from the the table (LocaleStringResource) and entered the data from another table  using the data migration (red gate sql data compare ) from another server with a shopping cart nop 2.1 slovak translation having the desired language, since I can not add anything new to a string resource. I wish I had done the same version
this error after insert
http://i.dogportal.sk/?di=7CBZ

and this is in logs

   The parameters dictionary contains a null entry for parameter 'languageId' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Resources(Int32)' in 'Nop.Admin.Controllers.LanguageController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters
Celá správa:   System.ArgumentException: The parameters dictionary contains a null entry for parameter 'languageId' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Resources(Int32)' in 'Nop.Admin.Controllers.LanguageController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters at System.Web.Mvc.ActionDescriptor.ExtractParameterFromDictionary(ParameterInfo parameterInfo, IDictionary`2 parameters, MethodInfo methodInfo) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)