I started an empty project in VS2013. I then ran Install-Package -Prerelease Microsoft.AspNet.Identity.Samples, to install a sample for MVC5. I now have no code analysis on any file that I open. I can run the solution wide analysis, and the Resharper menu options are available (like Refactor in the relevant context). But no automatic analysis and "color bar". I open other solutions in VS2013, and they have no problems. Is there something the installation of hte samples does that affects the analysis?