Maybe, you conert sample project in Visual Studio 2008.

After finished converting, delete xamFeatureBrowserResources from References. Then Add Reference...browser xamFeatureBrowserResources .dll over 4Mb size from installed folder xamFeatureBrowser sample. You can find it.^^

Then windows control panel-windows local settings to EN-US

 And then "app.xaml.cs " open

 public partial class App : System.Windows.Application
    {
        public App()
        {
            System.Globalization.CultureInfo objCI = new System.Globalization.CultureInfo("en-US");
            System.Threading.Thread.CurrentThread.CurrentCulture = objCI;
            System.Threading.Thread.CurrentThread.CurrentUICulture = objCI;
        }

Add upper code.

Then "TableOfContents.xml" property open.

Buind Action set Content

Copy to Output Directory set Copy always

http://forums.infragistics.com/forums/p/4555/25375.aspx#25375

http://blog.codemurai.de/2008/04/02/DieGeschichteVomInfragisticsXamFeatureBrowserUndNichtEnglischenBetriebssystemen.aspx