I tried running the demo from the offline examples and it seems to work fine in IE 10. The source data in my case is located in:
C:\Program Files (x86)\Telerik\UI for ASP.NET MVC Q1 2014\wrappers\aspnetmvc\Examples\VS2013\Kendo.Mvc.Examples\Content\dataviz\map
Do you get any errors in the browser console? Do you experience the same problem in other browsers?