The parameters dictionary contains a null entry for parameter 'languageId'

This is my error after update language row.

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
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) at System.Web.Mvc.Controller.ExecuteCore() at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) at System.Web.Mvc.MvcHandler.<>c__DisplayClass6.<>c__DisplayClassb.<BeginProcessRequest>b__5() at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass1.<MakeVoidDelegate>b__0() at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

On what page are you getting this error (please provide the full URL)? what version are you using? Have you done any customization of admin area?

a.m. wrote:

I added the Czech language to languages and since I missed this some sentences so I went to add a new line if it language. For example Categories.ByManufacturer and I have added translated row. When I save a new translated row i view this error. updating is the same.
In this page  www.domain.ru/Admin/Language/Resources?languageId=2

I cannot reproduce it. Just tested and it works fine. Could you please record a screencast with your actions?

Does anybody else experience this issue?

a.m. wrote:

screencast http://youtu.be/_BPEfOlzz9Y

Thanks, but I still cannot replicate it. I'll try to investigate it further

BTW, could you please get the latest version and give it a try? Does it also have this issue on your machine?