Hello Anwar Arakkal,
Thank you for the clarification.
Actually the System.Windows.Browser assembly
is a part of the Microsoft Silverlight framework
. Could you please try to re-reference it and if the problem persists try to locate the assembly manually - note the Reference Assemblies' location depends on the Silverlight version - for example if you setup your computer with SL2 the folder is:
\Program Files\Microsoft SDKs\Silverlight\v2.0\Reference Assemblies\
and for SL3 it is:
\Program Files\Reference Assemblies\Microsoft\Framework\Silverlight\v3.0\
Once again we advise you do download and use our latest release.
PS: Please note after the upcoming SP1 release we will probably stop support for the Silverlight 2. Regarding this information we highly advise you to move ahead with the RadControls for Silverlight 3.
the Telerik team