Google Earth Plugin throwing ********** Error to WPF Window

[C# Programming]

Hi, I am developing Google Earth application using C# WPF. To navigate Google Earth Plug-in URL, I used WebBrowser control in wpf window but I am getting Java Script error while Google Earth plug-in to webBrowser in WPF. Same code i applied in C# winform but not throwing any ********** errors and it is working good. Google Earth Plug-in ********** Error: Could not complete the operation due to error 80131509 Line: 38 Character: 7 Google Earth Plug-in Link: http://earth-api-samples.googlecode.com/svn/trunk/demos/desktop-embedded/pluginhost.html Please let me know to resolve the problem in WPF ******** Regards, chittibabu