If you have just updated your project to version 2013.1.319
which is the official Q1 of 2013
and the widgets are no longer localized then you need to replace the satellite assemblies with new ones.
The actual reason is the satellite assemblies inside the folder which contains the main Kendo DLL
that you refer :
C:\Program Files (x86)\Telerik\Kendo UI for ASP.NET MVC Q1 2013\wrappers\aspnetmvc\Binaries\Mvc3
are generated with different version and they need to be replaced with new ones that are the same version as the main Kendo.Mvc.dll
- Update to the latest internal build kendoui.complete.2013.1.325.commercial (if you have the Visual Studio Extension installed then a notification about an available update should have popped)
- Create your own build like explained here
- Copy/replace the DLLs manually inside the folder mentioned above with the ones attached to this thread.