The type or namespace name 'CrystalDecisions' could not be found

Question

Hello , 

I want to use crystal reports in my windows application.I am using vs2010 .

I have already installed SAP Crystal Report for visual studio 2010.

Now I have just added one blank report in my application .But When I build the project I got some errors of following : 


The type or namespace name 'CrystalDecisions' could not be
found (are you missing a using directive or an assembly reference?)


I have also added following references in references .

CrystalDecisions.ReportSource;

CrystalDecisions.CrystalReports.Engine;

CrystalDecisions.Shared;

Please help me if anyone knows how to solve it ? 

-thanks