I'm working on an outlook add in application that uses .Net Framework 4.0, Visual Studio 2010, Crystal Reports Version- 188.8.131.5280. I have built my setup using ClickOnce as the prerequisite. When I install the application on client machine, I see CRRuntimeEngine- 184.108.40.20680 installed, however I'm unable to open any reports. The error I see when I try to debug is that the Rep value is null. Can someone please suggest what I should be doing to resolve this or list down the steps to create the setup using Clickonce.