Report builder error after applying sql server 2008R2 SP3 when click on report builder gives error like 'Application validation did not succeed. Unable to continue.

Hi All,

I applied SQL server 2008 R2 SP3 recently but report builder doesn't work since then

When click on report builder gives error like 'Application validation did not succeed. Unable to continue.

and when I try to see details the error summary like following:

+File, Microsfot.ReportingServices.ComponentLibrary.Controls.dll, has a different computed hash than specified in manifest.

this is urgent.

Please reply me asap.

thanks a lot in advance.

Regards,

Nik

Regards, Naman