Hi priya,
RadMap requires 3 DLLs (2 is not enough):
1. Telerik.Windows.Controls.dll
2. Telerik.Windows.Data.dll
3. Telerik.Windows.Controls.DataVisualization.dll
The problem you've described is not related to the controls that are used in the application (RadMap, for example), but to the attempt to change namespace in your Silverlight application. There are a lot of articles in the Internet which describe the problem and give a solution. For example:
http://forums.silverlight.net/forums/p/11452/344056.aspx
http://blogs.microsoft.co.il/blogs/alex_golesh/archive/2008/07/22/quick-silverlight-tip-quot-initializeerror-2103-invalid-or-malformed-application-quot-what-is-it-and-how-to-deal-with-it.aspx
http://www.byteblocks.com/post/2010/03/17/Silverlight-Error-Invalid-or-malformed-application-Check-manifest.aspx
Kind regards,
Andrey Murzov
the Telerik team
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