The type 'Expression<>' is defined in an assembly that is not referenced

Question

In ASP.NET MVC 4.5.2 Framework.

after typing

@Html.LabelFor()
or 
@Html.EditorFor()

in view

I\'m getting Error: The

Answer 1

For me, there was an option under the project menu to "Enable C# 6.0/VB 14". Selecting this option did the trick. Previously I tried modifying the web.config, restarting Visual Studio, etc as was suggested in this post.