There is an unsaved comment in progress. You will lose your changes if you continue. Are you sure you want to reopen the work item?
Error in web.config for areas added to Empty ASP.NET MVC 4 Application
Starting out with an empty MVC 4 application, System.Web.Optimizations.dll is not referenced.
In the web.config in an area's views folder, line 18 adds the <add namespace="System.Web.Optimization"/> element pointing to an unreferenced assembly.
This causes a an error when trying to render any view in that area.